Veal Does Not Smell as Cow Beef
Veal
Veal liver sausage is a finely cut product containing effectually 30% liver with veal liver accounting for effectually fifty% of the total amount of liver (effectually fifteen% of total mass).
From: Meat Products Handbook , 2006
VEAL
R.G. Cassens , in Encyclopedia of Food Sciences and Nutrition (2nd Edition), 2003
Consumption
The consumption of veal in the USA, although never high, has declined markedly during the past one-tertiary century. In the early 1960s the per capita disappearance of veal on a retail weight basis was about 2.5 kg just by the early 1990s the value had fallen to about 0.v kg. Veal accounts for only well-nigh one% of the total consumption of red meat in the The states.
Such average values are hard to interpret because of regional and ethnic differences. For grocery stores overall in the United states, the per centum of sales from veal is well-nigh 1.v%, but in the northward-east and Middle Atlantic regions the percentages are ii.1% and ii.4%, respectively.
Almanac per capita consumption values for veal in some of the European countries, expressed in kilograms and for the year 1987, are 6.49 for French republic, iv for Italy, 2.one for Holland, and 0.1 for the Britain.
The likely explanations for low consumptions of veal in some countries, e.chiliad., the USA and the UK, are that it is not readily bachelor at market and the cost is expensive. The complications of ethnic, regional, and historical patterns must exist considered in such interpretations and conclusions.
Even though veal is a naturally depression-fat meat, it is unlikely that demand will increase in the future.
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Typical spreadable liver sausage and liver pâté products from effectually the world
Gerhard Feiner , in Meat Products Handbook, 2006
26.ane Fine veal liver sausage (Austria)
Veal liver sausage is seen as a delicacy in Republic of austria as veal liver itself is quite expensive. Veal liver sausage is a finely cutting product containing around thirty% liver with veal liver accounting for around 50% of the total amount of liver (around 15% of total mass). The rest of the meat and fat material used is veal meat (very young beefiness) and commonly boneless veal chest. Besides that, some fatty pork, or pork fat, provides the product with some fat fabric. Overall, a veal liver sausage contains around 30–35% fat, 10–15% veal liver, x–xv% pork liver and around 40–45% meat, with veal meat accounting for effectually 30–40% of the meat fabric. Pork skin or PHM is mostly not used in this high-quality product.
The finely cut sausage mass is produced either in a cooking bowl cutter or in the conventional way past processing precured and precooked materials, which accept been treated with steam or take been placed in a hot-water bath. Liver is more often than not precut (even though this is not technologically required) and 1–2% sweet cream is frequently added into the sausage mass also. A bear upon of vanilla rounds off the flavour. Common salt is present in the final product at around i.viii% and spices utilized are white pepper, cardamom, mace and ginger. Nitrite and color enhancer (ascorbic acid or ascorbate) are added too. The finely emulsified product is filled into waterproof casings and pasteurized at 78–80 °C to a core temperature of 72 °C. Once cooled, the chilled product is oft dipped in wax and the finished product should be of a low-cal-pink colour. It should take a very creamy smooth texture and a pleasant sense of taste of liver rounded off with vanilla.
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NUTRITION OF MEAT ANIMALS | Ruminants
C. Reinhardt , B. Faris , in Encyclopedia of Meat Sciences (2nd Edition), 2014
Veal Product
Veal is usually produced from culled dairy bull calves and is a pocket-size function of the manufacture. Traditionally, veal is stake, lean beef from very young animals. After the calves take received colostrum, they are separated from the cow and maintained on a liquid diet of whole milk or milk replacer until they are approximately 154 kg or three months of age. These calves are susceptible to digestive disorders and therefore have to exist limit-fed cautiously until they are approximately 4-weeks old, subsequently which they tin exist provided whole milk or milk replacer advertizement libitum. At ad libitum intake, calves can eat ane–1.6 kg of DM per day or 1.5% of body weight without any detrimental effects. Feed conversion efficiencies ranging between 1.3 and 1.v kg of milk DM per kilogram gain have been observed. Such high feed efficiencies are possible because whole milk or equivalent quality milk replacer is fed to the calves, because the calves are maintained on fluid feed and the development of the rumen is discouraged, and because the provision of fluid diets up to slaughter maintains the esophageal groove functionality and, as a result, fluid milk passes directly from the reticulum to the omasum. Since the components of the diet are not subjected to fermentation in the rumen, the calves reap the benefit of the high quality of the milk proteins and other components at a time when they take a high growth potential.
Veal is produced with high-quality feed that could otherwise be used for human consumption. Although milk proteins can be substituted by vegetable proteins, such every bit soy protein in milk replacers, calves can develop allergic reactions to the proteins, which thus require all-encompassing processing to render them condom for use in milk replacers. The incorporation of acceptable amounts of vitamins and minerals into milk replacers is essential to produce superior-quality veal. Frequently, insufficient iron is provided in the diet in order to maintain the pale color; however, this can affect the calves' growth rate and the elimination of supplementary atomic number 26 is a practice that is not recommended by many national animal welfare councils.
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Past-PRODUCTS | Edible, for Man Consumption
H.West. Ockerman , Fifty. Basu , in Encyclopedia of Meat Sciences (2nd Edition), 2014
Stock
Veal, lamb, pork, or cracked beefiness basic; cooked or uncooked and sometimes combined with meat scraps, can be converted into soup stock. Lamb and pork bones produce singled-out and strong flavors and should be used in lamb and pork dishes. Stock is economical and adds diet and flavor to cooked products. To produce stock, bones are ordinarily combined with vegetables, covered with hot h2o and placed in an oven for roasting until the bones plow brown. Fat is separated and the bones are combined with additional vegetables covered with water and simmered in the water, then skimmed. The stock is so strained and cooled; information technology can be refrigerated or frozen. It is used with cooking in meat dishes, soups, vegetable dishes, sauces, or gravies.
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ETHNIC MEAT PRODUCTS | French republic
C. Lambel , Five. Santé-Lhoutellier , in Encyclopedia of Meat Sciences (Second Edition), 2014
With Veal
- •
-
Blanquette de veau (veal blanquette) ( Figure 1): this recipe is the favorite French repast in France; it consists in a veal stew with white sauce. Veal meat used for blanquette is a piddling expensive and has enough fatty in parts (parties), and then that the meat does not dry out during the cooking; cuts include meridian of rib, back of the knee or, breast of veal support, i.e., tendron (middle-cut chest of veal). Veal meats are cooked in a broth made of water, onions, carrots, leeks, garlic, and white vino. Then a sauce is made with a 'roux' and in the cooking broth, mushrooms as well as lemon juice are added. The veal is served in the sauce.
Figure one. Streaky salary with lentils.
- •
-
Veal Marengo: diced veal stew with tomatoes, carrots, onions, mushrooms, veal broth, and white wine.
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SAUSAGES, TYPES OF | Emulsion
C.L. Knipe , in Encyclopedia of Meat Sciences (Second Edition), 2014
Types of Emulsified Sausages
Examples of emulsified sausages include: frankfurters, wieners, hot dogs, bologna, white hots (cooked bratwurst), bockwurst, knockwurst, Braunschweiger, or liver sausage. The descriptions of these products, and more, follow.
Bockwurst
The traditional bockwurst contains veal and pork, milk, eggs, chives, and parsley and is seasoned similarly to frankfurters; however, bockwurst does non contain nitrite and is not smoked. Bockwurst is stuffed into ane in. (25 mm) diameter casings and cooked in water. Originally, bockwurst was sold every bit a fresh (raw) product merely is now most often sold as a cooked product, because of its highly perishable nature.
Bologna
Bologna, which originated from Bologna, Italia, is made much similar frankfurters and wieners. Bologna is most often stuffed in larger diameter (iv–5 in./10–13 cm diameter) casings, sold in chubs or sliced for use equally cold sandwich meat. It is also available as ring bologna, in which beef rounds are used for the casing and stuffed equally 1 lb (454 yard) loops. Bologna could be made with a coarse-footing texture but most normally is a finely chopped production.
Bolognas oftentimes have a like season to hot dogs, simply they often comprise more garlic to enhance the flavor, every bit they are most often eaten cold. Mustard is heavily used in most bolognas. Large-diameter bologna is not typically smoked.
Braunschweiger
Braunschweiger, or liver sausage, is typically made from pork trimmings, livers, and salary trimmings and cooked in moisture-impermeable casings in h2o. This product may be cured or uncured, spreadable or sliceable, or fine chopped or coarse minced. The spreadable liver sausages are not considered emulsified, considering to retain spreadability poly peptide-to-protein bind needs to be minimized. Onion, nutmeg, and smoked bacon are typical flavors establish in liver sausages. Nonfat dry milk is used to soften the harsh flavor of the liver. If cooked meats are used instead of raw ingredients, a spreadable product (see paté) is produced.
Cocktail Frankfurters
These are short, small-scale bore, finely chopped frankfurters, typically used equally appetizers. Currently, cocktail franks are often produced by a coextrusion process, which does non require the employ of a casing.
Frankfurters
This product is believed to originate in Frankfurt, Germany in 1487. The name frankfurter is often used interchangeably with frank, wiener, and hot canis familiaris. Frankfurters are typically iii/4 to 1 in. (20–25 mm) in diameter and are linked in 5 in. (12.5 cm) lengths. Frankfurters are prepared using either a natural casing or a cellulose casing and are typically smoked. The cellulose casing is removed before packaging of this product, which results in what is called a skinless product. Skinless frankfurters make upwards more than 95% of this production category. Frankfurters are most unremarkably sold in the fine-chopped, emulsified form merely may be made as a coarse-ground product. Frankfurters are most frequently sold in packages of 10 per pound (454 1000).
The flavor of frankfurters is typically due to black pepper, nutmeg, and maybe coriander. Garlic and onion may as well exist used in frankfurters. Mustard is heavily used in nigh hot dogs. Other spices may be used to produce a particular regional season. Because they are normally eaten hot, frankfurters would non exist as heavily spiced equally bologna, which is most frequently eaten cold.
Hot Dogs
Officially, hot dogs are wieners or frankfurters, which are sold and eaten in a bun. Hot dogs were showtime seen in the late 1800s, at baseball game games in the United States, at which vendors decided to use bread, instead of the 'gloves' that had been used previously, to concur the hot sausages while eating. Frankfurters were ofttimes called 'dachshund' or 'lilliputian dog' sausages by German vendors. Although in that location is non total agreement on the origin of the proper noun 'hot canis familiaris,' one version is that a New York Periodical sports cartoonist, Tad Dorgan, was not sure how to spell 'dachshund' in a cartoon he was cartoon, so he simply wrote 'hot dog!'
Knackwurst
Knackwurst sausages are very like to frankfurters. They are made with a fine-chopped texture, except that they are made using a larger diameter casing (i½ in./four cm) than near frankfurters and linked in 3–four in. (7.5–ten cm) lengths. Knockwurst sausages are known for their garlic season.
Mettwurst
This product was originally made in a couple of ways in its native Germany. In Southern Germany, mettwurst is fabricated of pork smoked and sold as a raw, spreadable product. In Northern Germany, information technology is fabricated similarly, but it was dried longer during the smoking process to make a dry product. In the United states, it is fabricated primarily as a linked, cooked, and smoked sausage product.
Paté
Paté is a finely comminuted product similar other emulsified products, but in order to make information technology a spreadable product, the emulsification process (discussed before) is not used for this product. Paté is made from fresh livers and precooked pork and cooked in a moisture-impermeable casing. This production lacks the demark of liver sausages made from raw meat ingredients and is, therefore, a spreadable product.
Vienna Sausages
Vienna sausages are short, small-bore frankfurters oft cut (open up ends) from long lengths of blimp casings and sold in cans or glass jars.
White Hots
Also known as a cooked bratwurst, this product is made much like frankfurters except that its product contains no nitrite and is typically not smoked.
Wieners
Wieners originated in Vienna, Republic of austria. The wiener is essentially the same equally a frankfurter, with the exception that originally it was made primarily from veal, rather than from pork and beef. Currently, there is very lilliputian difference between a wiener and a frankfurter, and the names are often used interchangeably, even though wieners have been defined as being smaller than 20 mm in diameter and frankfurters equally beingness xx mm or larger.
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Meat, Poultry, and Meat Products: Nutritional Value
P.A. Lofgren , in Encyclopedia of Human Nutrition (Third Edition), 2013
Veal
Although representing a smaller proportion of overall meat consumption, veal still provides a food contour that is very beneficial. Equally with all meat sources, veal provides high-quality protein in a product that may be slightly bacteria (in terms of fat) than other red meat sources. Compared to other meat sources, veal would accept a lower iron content.
Table one provides the free energy, protein, and lipid profile of veal along with other meat sources. For a comparison of the mineral limerick of veal products versus that of other common meat sources, see Table 2. For a comparison of the vitamin limerick of veal products versus that of other common meat sources, encounter Tabular array 3.
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Canning of meat and poultry
In A Complete Course in Canning and Related Processes (Fourteenth Edition), 2016
7.2.vii Jellied veal
| Ingredients | Metric amount | Imperial (U.Due south.) amount |
|---|---|---|
| Knuckle of veal | 45.4 kg | 100 lbs. |
| Onion powder | 113 thousand | 4 oz. |
| Cloves, whole* | 57 m | 2 oz. |
| Bay leaves* | 28 grand | 1 oz. |
| Whole blackness pepper* | 113 1000 | four oz. |
| Salt | 0.nine kg | 2 lbs. |
| Vinegar | 0.94 L | 1 quart |
| Worcestershire sauce | 0.47 50 | 1 pint |
- *
- A especially formulated spice blend or spice oil with the equivalent amounts of these ingredients may be used.
Cutting the veal into small pieces, place in kettle, and cover with common cold water; bring to a boil, and simmer 60 min. Add together the onion and allspice enclosed in a pocketbook, and simmer for another 60 min. Accept out the meat, remove the bones, and pack in cans. Add the vinegar and sauce to the liquor, strain, and pour over meat in cans. Seal, and procedure 1-lb. (454 g) cans 60 min at 250 °F (121 °C) and two-lb. (907 chiliad) cans 70 min at 250 °F (121 °C).
Examples of process times and temperatures jellied veal, in all the same retorts*
| Can size | Time | Temperature |
|---|---|---|
| one lb. (454 kg) | sixty min | 121 °C (250 °F) |
| 2 lb. (0.91 kg) | 70 min | 121 °C (250 °F) |
- *
- These processes are subject to change every bit further data becomes available. For latest recommended processes or for processes in other sterilisation systems or in other can sizes, consult with a competent thermal process authority.
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Meat: Part in the Diet
S.H. McNeill , Yard.Due east. Van Elswyk , in Encyclopedia of Food and Health, 2016
Sources and Production
Meat sources vary throughout the world. Pork, beefiness including veal, poultry, lamb/mutton, and caprine animal meats are the most normally consumed; even so, regional variations exist. According to availability or local custom, rabbit, deer (venison), horse, camel, and other mammals oft serve equally sources of meat. Currently, grunter stocks lead the earth'south meat production with China and the United States producing more than half (55%) of the world'south pork ( Tables 1 and two ). The United states of america is the largest producer of beef cattle, accounting for 19% of global production, followed past Brazil with xiv% of global product. The United states of america, China, and Brazil are likewise the top producers of chicken, representing 19%, 14%, and 13% of global product, respectively. The Us is the largest producer of turkey, providing almost half (48%) the global production.
Table one. Top meats produced worldwide (2011)
| Meat source | Production (metric tons) |
|---|---|
| Pig | 108 055 178.57 |
| Chicken | ninety 143 993.68 |
| Cattle | 62 941 735.68 |
| Sheep | 8 348 110.64 |
| Turkey | v 462 721.seventy |
| Goat | 5 262 747.23 |
| Meat (full) | 297 479 837.24 |
Source: FAO, Statistics Partitioning (FAOSTAT), http://faostat.fao.org/
Tabular array 2. Elevation meat-producing countries (2011)
| Meat source | Country | Production (metric tons) |
|---|---|---|
| Cattle | The United States | eleven 983 308.00 |
| Brazil | 9 030 000.00 | |
| China | 6 182 155.00 | |
| Argentina | two 497 250.00 | |
| Chicken | The United States | 17 111 240.00 |
| People's republic of china | 12 170 062.00 | |
| Brazil | xi 421 730.00 | |
| Russian federation | 2 895 489.00 | |
| Goat | China | ane 889 602.00 |
| Bharat | 596 600.00 | |
| Nigeria | 292 100.00 | |
| Pakistan | 285 000.00 | |
| Grunter | China | 49 396 351.00 |
| The U.s. | ten 330 808.00 | |
| Deutschland | 5 616 074.00 | |
| Espana | 3 469 345.00 | |
| Sheep | Mainland china | 2 050 000.23 |
| Australia | 512 235.00 | |
| New Zealand | 465 318.00 | |
| Sudan (former) | 324 000.00 | |
| Turkey | The The states | 2 626 531.00 |
| Brazil | 489 000.00 | |
| Germany | 467 354.00 | |
| French republic | 398 082.00 | |
| Italian republic | 309 483.00 |
Source: FAO, Statistics Segmentation (FAOSTAT), http://faostat.fao.org/
The production of livestock for food is increasing driven by a shift toward the inclusion of more animal products in the diet. In Asia, where the bulk of increase in the world population has occurred over the concluding decade, consumption of meat has increased an estimated 3% annually. The rapid growth in meat production has been primarily the upshot of increased demand for poultry with beefiness, buffalo, and pork production remaining relatively stable as shown in Figure 1 . According to the Nutrient and Agronomical Clan (FAO) Statistical Yearbook 2013, a change in the composition of livestock production has been occurring since the 1960s. Growth of global beef production has gradually declined from almost 2% per yr in the 1960s to < 1% per year in the early 2000s. Squealer production has undergone a greater decline, from a growth charge per unit of four% per year to 0.8% per year during the aforementioned time period, while poultry stocks keep to abound at a rate of ~ 3% per year. However, China and Oceania are exceptions to the trend in ruddy meat production elsewhere. Pig stocks in China have shown a significant increase from 36.8 million tons in 2000 to 49.iv million tons in 2011, representing an increase of over 34% during the 11-year catamenia. In Oceania countries, the pct of full livestock produced – specifically cattle and buffalo – has increased from 11.8% in 2000 to 14.four% in 2011 ( Effigy 2 ).
Figure ane. Earth meat production (2000–10).
Figure 2. Tendency of cattle and buffaloes as pct of full livestock produced 1992–2011.
FAO, Statistics Division (FAOSTAT), http://faostat.fao.org.Several production systems contribute to the availability of meat effectually the earth. No single production arrangement all-time fits all livestock or the availability and security needs for nutrient across different world regions and communities. Productions systems vary on a continuum from those that rely on livestock grazing and consumption of feed sources not readily consumed by humans to those occupying limited state, which rely, at to the lowest degree in office, on feed sources common to the human diet. Over lx% of the world'due south poultry meat and eggs are produced in so-called 'landless' production systems, which is not surprising, equally poultry require limited infinite due to their size. As monogastric animals, poultry consume a diet containing food sources that also contribute nutrients to the human diet. In contrast, over 70% of the world'southward beefiness was produced using a mixed system including grazing and, as ruminant animals, consumption of crop residues and concentrates non otherwise edible for humans.
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Measures of Nutrient Quality
Sze Ying Leong , Indrawati Oey , in Reference Module in Nutrient Science, 2017
Meat, Meat-Based Products and Seafood
Meat is the muscle tissue of animals. Pork, beefiness and veal, mutton and lamb, poultry (craven, duck and turkey), venison, fish (lean and fat fish) and shellfish (mollusc and crustacean) are the typical muscle-based foods consumed by human equally an important source of protein in the daily diet. The chemic composition of meats vary due to differences in their genetics (breed/species), gender, age, their diet and nutritional condition, the muscle type, the location and physiological office of the muscle in the animate being and the physical exercise of the animate being (related to the blazon of farming such equally free-range, muzzle etc.). All these influence the musculus-to-bone ratio and fat-to-water-to-poly peptide ratio, leading to consequences on meat quality. Some of the primal quality traits for fresh meat cuts include musculus appearance, colour, texture, tenderness, juiciness, mouthfeel characteristics, fat content, connective tissue, and muscle fibre characteristics. These meat quality traits are farther affected during slaughtering and post-rigor handling. The quality measures for fresh meat cuts and processed meats are summarised in Table 3.
Tabular array 3. Common measures of quality-related changes in meat, meat-based products and seafood
| Quality indicators | Normally-used measurement assays or techniques |
|---|---|
| Chemical composition | Water content and water activity Fatty content (full level of free fat acids, limerick and the degree of saturation) Protein content (amino acids, detection of protein oxidation products) Minerals content (iron, zinc, magnesium, potassium, phosphorus, sodium, calcium) Vitamin content (thiamine, riboflavin, niacin, pantothenic acid, folate, vitamins B6 and B12) Nitrite level (especially for processed and cured meat products) |
| Water holding chapters (chronicle to the saleable weight and appearance of fresh meat and bear upon on meat tenderness after cooking) | Drip/purge loss technique (press the creature musculus tissue nether external mechanical force or centrifugation and compare the final weight to initial weight, weight loss is considered as the water that the tissue is unable to retain) Cooking loss Measurement of meat pH, glucose content and glycolytic potential (to obtain information on the post-mortem metabolism of muscle when converting to meat) |
| Mouthfeel (relate to muscle construction and eating quality - tenderness) | Microscopy techniques to study meat microstructure Texture contour analysis, shearing method, compression test, penetration exam using texture analyser to define important texture parameters (cut forcefulness, chewiness, hardness, springiness, cohesiveness, gumminess) Sensory panel (assessment on meat tenderness, juiciness) Collagen content (relate to meat toughness) |
| Colour and appearance (relate to chemical and biochemical changes of animal muscle tissues) | Colorimeter or spectrophotometer or spectrocolorimeter, visible and near-infrared reflectance spectrophotometer and tristimulus colorimeter Assessment of fat marbling using visual and epitome analysis Colour chart or colour fan (east.g. salmon) Pigments quantification Sensory panel (assessment on colour and advent) |
| Lipid oxidation (chronicle to off-flavour development) | TBARS method Season or volatiles identification and quantification Sensory console (cess on acid and rancid season) |
| Meat flavour and aroma | Flavour or volatiles identification and quantification of cooked meat (to distinguish species-specific flavours and to detect compounds developed as a result of thermal decomposition of amino acids and peptides, caramelisation of sugars, degradation of ribonucleotides, interaction of reducing sugars with amino acids or peptides (Maillard reaction) and thermal degradation of lipid), sensory panel (assessment on odour, odor and flavour) |
| Detection of microbial flora, lactic acid bacteria, bacteriophages and early spoilage (determination of production shelf life) | Microbiological assays (enumeration of microbial groups using selective growth media and conditions (total plate count), random isolation of colonies, splot/plaque assay, turbidity/growth test, impedance/conductivity measurement of the cultures, electron microscopy, menstruation cytometry, phenotypic methods) Molecular methods (ELISA, PCR, sequencing of 16S rRNA genes) Flavour or volatiles identification and quantification, sensory console (detection of fishy or putrid odours in seafood) |
| Safety | Using chromatography technique to observe toxicants, contaminants (chemical residues, heavy metals) |
| Quality indicators of fish and seafood | Chemical and biochemical methods: determination of freshness and spoilage using k factor adding (based on ATP and its breakdown products), assay of biogenic amines (histamine or cadaverine), analysis of trimethyl amine, trimethyl amine oxide and formaldehyde, analysis of total volatile basic nitrogen Physical methods: microscopy, pH measurement, texture and texture profile assay, conductivity, colour measurement, epitome analysis Microbiological methods: total viable count, determination of specific spoilage organisms, bacterial sensors, PCR-based methods Species identification and authenticity: fish protein identification, Deoxyribonucleic acid analysis Differentiation betwixt fresh and frozen-thawed products: test of the opacity of the eye lens, measurement of the electrical resistance, determination of the red blood cells (erythrocytes), determination of specific enzymes (east.g. lactate dehydrogenase indicates cell membrane leakage due to mechanical harm cause by freeze-thawing) |
Appearance (related to colour) and texture (related to tenderness and juiciness) are the most important quality traits in musculus-based foods since these two factors predominantly influence consumer choices at the bespeak of purchase (Font-i-Furnols & Guerrero, 2014). Fresh red meat cuts such as beefiness are deemed every bit having a premium quality if the meat has a uniform advent, is bright red in colour (related to freshness perception), has a moist surface (related to the perception of moisture level within the muscle), firm flesh texture, evenly marbled fat and reduced visibility of connective tissue (related to perception on meat tenderness). The general appearance of muscle-based foods usually reflects their toll. For this reason, the meat industry maintains the uniformity of colour throughout the processing and handling of the muscle tissue. Measuring meat colour using an instrumental device such as a colorimeter is usually a skillful starting point to appraise the state of myoglobin and to effectively sort or class meat before displaying it for consumers.
Muscle foods, unlike other food systems, are not commonly eaten raw and hence the expectation of meat quality is mostly justified only when they are cooked and chewed. Textural backdrop of meat can physically affect the mode consumers perceive the mouthfeel of meat. In this respect, tenderness and juiciness of (cooked) meat are considered the major textural quality attributes appealing to consumers that bulldoze their willingness to pay loftier price for a particular meat cut. Meat tenderness is strongly influenced by the connective tissue and musculus fibre characteristics (Listrat et al., 2016). Connective tissue is a blazon of fibrous structure predominantly equanimous of cross-linking of collagen fibrils. Muscles from mature animals or muscles used in movement, which contain college amounts of connective tissue and collagen cross-links, are generally tougher (or less tender) compared to muscles from younger animals or muscles that are used for structural back up. Additionally, the amount of collagen and degree of their crosslinking in musculus tissue can have an implication on meat solubility during cooking.
Unpredictable changes in the characteristics of muscle fibres occurring during the post-mortem conversion of musculus to meat may bring consequences on meat tenderness (Soltanizadeh and Kadivar, 2014). As muscles enter rigor mortis, shortening or contraction of the myofibrils and muscle fibres takes identify, causing muscle stiffness. The resolution of rigor volition somewhen take identify and meat becomes tender. Therefore, meat ageing is necessary, allowing muscle fibres to go more relaxed and extensible. However, chilling the meats immediately after slaughter without allowing for the development of rigor mortis can produce extremely tough meat; the musculus remains contracted during the cold storage and the resolution of rigor mortis volition not take place. In this respect, monitoring meat pH and the charge per unit of pH decline at the outset case can provide an effective measure of the post-mortem status for muscle tissue. The addition of exogenous proteolytic enzymes of plant origin such equally papain (EC 3.iv.22.two) and actinidin (EC iii.four.22.xiv) take been introduced to tenderize meat at an industrial level (Ha et al., 2012). Even so, a careful control on the amount and the elapsing of enzymatic reaction is critical to avoid "over-tenderising" the meat that destroys the unabridged muscle fibre construction, resulting in a mushy, soft texture.
Muscle fibres also play an of import role in the water immobilisation in meat, which contributes towards the perception of meat juiciness. Water accounts for about 70%–75% of meat's fresh weight, and the majority of water is confined via capillary in the spaces betwixt myofilaments, between the myofibrils, and exterior the fibres. Changes in the characteristics of muscle fibres tin affect their h2o holding capacity (Huff-Lonergan and Lonergan, 2005). The biochemical reactions taking place during the conversion of muscle to meat can cause structural changes in the muscle fibres, either due to net charge effect betwixt the fibres (i.eastward. excessive lactic acid production reduces meat pH leading to myofibril shrinkage) or stearic effect (i.e. muscle goes into rigor/contraction and reduces the infinite available for water within the myofibril) (Huff-Lonergan and Lonergan, 2005). These tin critically influence the power of muscle cells to retain h2o. Muscle water content or drip loss can exist a skillful predictor of juiciness, albeit fatness or marbling in meat may too contribute towards juiciness perception.
In intact meat cuts, prediction of meat tenderness and juiciness can be performed using mechanical shearing probes or devices to mimic human mastication (see Tabular array 3). However, in the example of processed-meat products, intact muscle tissue is ordinarily comminuted (reduction of particle sizes) and then restructured through the gel-forming and emulsification backdrop of the musculus proteins. The rheological properties (hardness, deformability, elasticity, cohesiveness) of the meat particles are important quality measures to ensure homogeneity in quality and chemical composition of processed meat products.
With respect to seafood and seafood products, food prophylactic of the raw fabric itself needs to exist addressed before they are offered for consumption and processing. The recommended analytical methods to accost them and to determine the seafood quality are summarised in Tabular array 3. Compared to land animals, aquatic animals experience rigor mortis at a much faster rate due to a lower glycogen reserve. Aquatic animals are oftentimes contaminated with parasites and high amounts of viruses, microorganisms, toxins, harmful metallic elements (e.g. mercury, cadmium), and environmental pollutants. Furthermore, residues of pharmaceuticals and hormones can accumulate in aquatic animals. All of these pose a gamble to homo health. Rapid formation of fish aroma afterwards they are caught is due to autolytic activities (i.eastward. degradation of lipids and nucleotides and formation of biogenic amines). Thereafter, endogenous enzyme activity (lipoxygenase action on polyunsaturated fatty acids) and oxidation processes dominate within several hours. Finally, evolution of "fishy" aroma (indicative of a loss of freshness and microbial spoilage) occurs. It has to be noted that the freezing-thawing procedure can alter the fish quality in several ways compared to freshly caught fish, including texture deterioration and development of rancid flavour.
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