Table 2-1 - Approximate composition of mammalian skeletal muscle (percent fresh weight basis)
Percent | Percent | ||
WATER (range 65 to 80) | 75.0 | NON-PROTEIN NITROGENOUS SUBSTANCES | 1.5 |
Creatine and Creatine phosphate | 0.5 | ||
PROTEIN (range 16 to 22) | 18.5 | Nucleotides (Adenosine triphosphate (ATP), adenosine tiphosphate (ADP), etc.) | 0.3 |
Myofibrillar | 9.5 | Free amino acids | 0.3 |
Myosin | 5.0 | Peptides (anserine, carnosine etc.) | 0.3 |
Actin | 2.0 | ||
Tropomyosin | 0.8 | ||
Troponin | 0.8 | Other nonprotein substances (creatinine, urea, inosine monophosphate (IMP), nicotinamide adenine dinucleotide (NAD), nicotinamide adenine dinucleotide phosphate (NADP)) | 0.1 |
M protein | 0.4 | CARBOHYDRATES AND NON-NITROGENOUS SUBSTANCES (range 0.5 to 1.5) | 1.0 |
C protein | 0.2 | Glycogen (variable range 0.5 to 1.3) | 0.8 |
a-actinin | 0.2 | Glucose | 0.1 |
b-actinin | 0.1 | Intermediates and products of cell metabolism (hexose and triose phosphates, lactic acid, citric acid, fumaric acid, succinic acid, acetoacetic acid, etc.) | 0.1 |
Sarcoplasmic | 6.0 | INORGANIC CONSTITUENTS | 1.0 |
Soluble sacroplasmic and mitochondrial enzymes | 5.5 | Potassium Total phosphorus | 0.3 |
Myoglobin | 0.3 | (phosphates and inorganic phosphorus) | 0.2 |
Hemoglobin | 0.1 | Sulfur (including sulfate) | 0.2 |
Cytochromes and flavoprotein | 0.1 | Chlorine | 0.1 |
Sodium | 0.1 | ||
Stroma | 3.0 | Others (including magnesium, calcium, iron, cobalt, copper, zinc, nickel, manganese etc.) | 0.1 |
Collagen and recticulin | 1.5 | ||
Elastin | 0.1 | ||
Other insoluble proteins | 1.4 | ||
LIPIDS (variable range: 1.5 to 13.0) | 3.0 | ||
Neutral lipids (range: 0.5 to 1.5) | 1.0 | ||
Phospholipids | 1.0 | ||
Cerebrosides | 0.5 | ||
Cholesterol | 0.5 |
Source: Principles of Meat Science by Forrest et al. (1975) W.H. Freeman & Co.
Table 2-2 - Composition of fat and lean (per 100 g wet weight)
Fat* |
||||||||||||
Water | Protein | Pat | Energy | Sat. | Mono | Poly | Chol | |||||
(g) | (g) | (g) | (MJ) | (g) | (g) | (g) | (mg) | |||||
Beef fat, raw | 24 | 9 | 67 | 2.6 | 29 | 32 | 3 | 90 | ||||
lean | 74 | 20 | 5 | 0.5 | 2 | 2 | 0.2 | 60 | ||||
Lamb, fat | 21 | 6 | 72 | 2.8 | 36 | 28 | 3 | 75 | ||||
lean | 70 | 21 | 9 | 0.7 | 4 | 3 | 0.4 | 80 | ||||
Pork, fat | 21 | 7 | 71 | 2.8 | 26 | 29 | 11 | 75 | ||||
lean | 72 | 21 | 7 | 0.6 | 2.5 | 3 | 1 | 70 |
Fat*: - saturated, monosaturated, polyunsaturated, cholesterol.
Table 2-2 (continued) - VITAMINS AND MINERALS
Fe | Cu | Zn | A | D | E | B1 | B2 | Niacin | B6 | B12 | Folate | Pantothenate | Biotin | |
mg | mg | mg | mg | mg | mg | mg | mg | mg | mg | mg | mg | |||
Beef, fat, raw | 1.0 | 0.1 | 1.0 | - | - | 0.3 | - | - | - | - | tr | - | - | tr |
lean, saw | 2.1 | 0.14 | 4 | tr | tr | 0.15 | 0.07 | 0.25 | 5 | 0.3 | 2 | 10 | 0.7 | tr |
Lamb, fat | 0.7 | 0.15 | 0.8 | - | - | 0.3 | - | - | - | - | tr | - | - | tr |
lean | 1.6 | 0.17 | 4 | tr | tr | 0.1 | 0.14 | 0.3 | 6 | 0.25 | 2 | 5 | 0.7 | 2 |
Pork, fat | 0.7 | 0.1 | 0.4 | tr | tr | 0.03 | - | - | - | - | tr | - | - | tr |
lean | 0.9 | 0. 15 | 2.4 | tr | tr | 0 | 0.9 | 0.25 | 6 | 0.45 | 3 | 5 | 1 | 3 |
(McCance and Widdowson 1991)
Table 2-3 - TYPICAL ANALYSES OF VARIOUS TYPES OF MEAT
Source | Protein | Fat | Na | K | Ca | Mg | P | Fe | Cu | Zn | Cl | ||||||
(X wet wt.) | (% wet wt.) | (mg/100g wet wt.) |
|||||||||||||||
Ox lean, av | 20.3 | 4.6 | 61 | 350 | 7 | 20 | 180 | 2.1 | 0.14 | 4.3 | 59 | ||||||
Sheep lean, av | 20.8 | 8.8 | 88 | 350 | 7 | 24 | 190 | 1.6 | 0.17 | 4.0 | 76 | ||||||
Pig lean, av | 20.7 | 7.1 | 76 | 370 | 8 | 22 | 200 | 0.9 | 0.15 | 2.4 | 71 | ||||||
Calf, filet | 21.1 | 2.7 | 110 | 360 | 8 | 25 | 260 | 1.2 | - | - | 68 | ||||||
Rabbit lean, av | 21.9 | 4.0 | 67 | 360 | 22 | 25 | 220 | 1.0 | 0.54 | 1.4 | 74 | ||||||
Chicken, light meat, av | 21.8 | 3.2 | 72 | 330 | 10 | 22 | 180 | 0.9 | 0.25 | 1.6 | 86 | ||||||
dark meat, av | 19.1 | 5.5 | 89 | 300 | 11 | 25 | 190 | 1.2 | 0.20 | 2.0 | 90 | ||||||
Source | Thiamin | Riboflavin | Nicotinic Acid | B6 | B12 | Folic Acid | Biotin | E | |||||||||
(mg) | (mg) | (mg) | (mg) | (mg) | (mg) | (mg) | (mg) | ||||||||||
Ox lean, av | 0.07 | 0.24 | 5.2 | 0.32 | 2 | 10 | Tr | 0.19 | |||||||||
Sheep lean, av | 0.14 | 0.78 | 6.0 | 0.25 | 2 | 5 | 2 | 0.10 | |||||||||
Pig lean, av | 0.89 | 0.25 | 6.2 | 0.45 | 3 | 5 | 3 | - | |||||||||
Beef, fillet | 0.10 | 0.25 | 7.0 | 0.30 | 1 | 5 | Tr | - | |||||||||
Rabbit lean, av | 0.10 | 0.19 | 8.4 | 0.50 | 10 | 5 | 1 | 0.13 | |||||||||
Chicken, light meat, av | 0.10 | 0.10 | 9.9 | 0.53 | Tr | 12 | 2 | 0.08 | |||||||||
dark meat, av | 0.11 | 0.22 | 5.4 | 0.30 | 1 | 12 | 3 | 0.14 |
(Lawrie 1981)
TABLE 24 - AMINO ACID COMPOSITION (ma AMINO ACID PER g PROTEIN) OF MUSCLE PROTEINS, CONNECTIVE TISSUE COMPONENTS AND SELECTED MEAT PRODUCTS
Beef | Pork | Lamb | Cured Processed Meats | MDM* | Actin | Myosin | Tropomyosin | Bovine Collagen | Bovine elastin | |
Aspartic acid | 88 | 89 | 85 | 91 | 88 | 107 | 115 | 117 | 43 | 9 |
Threonine | 40 | 51 | 49 | 49 | 32 | 77 | 54 | 31 | 18 | 9 |
Serine | 38 | 40 | 39 | 42 | 38 | 58 | 41 | 40 | 35 | 7 |
Glumatic acid | 144 | 145 | 144 | 129 | 142 | 140 | 229 | 320 | 99 | 19 |
Proline | 54 | 46 | 48 | 52 | 61 | 50 | 25 | 6 | 114 | 106 |
Glycine | 71 | 61 | 67 | 80 | 82 | 43 | 26 | 9 | 187 | 189 |
Alanine | 64 | 63 | 63 | 64 | 67 | 58 | 59 | 89 | 74 | 158 |
Valine | 57 | 50 | 50 | 52 | 61 | 49 | 47 | 29 | 23 | 140 |
Methionine | 23 | 25 | 23 | 22 | 28 | 42 | 33 | 25 | 8 | Tr |
Cystine | 14 | 13 | 13 | 15 | 15 | 12 | 11 | 9 | - | - |
Total SAA | 37 | 38 | 36 | 37 | 43 | 43 | 54 | 44 | 34 | 8 |
Isoleucino | 51 | 49 | 48 | 49 | 39 | 84 | 55 | 39 | 15 | 31 |
Leucine | 84 | 75 | 74 | 74 | 80 | 82 | 108 | 121 | 28 | 72 |
Tyrosine | 32 | 30 | 32 | 29 | 25 | 67 | 33 | 29 | 67 | 13 |
Phenylalanino | 40 | 41 | 39 | 40 | 43 | 48 | 47 | 9 | 21 | 52 |
Total aromatic | 72 | 71 | 71 | 69 | 68 | 115 | 80 | 38 | 88 | 65 |
amino acidsHistidine | 29 | 32 | 27 | 28 | 30 | 27 | 24 | 10 | 8 | 1 |
Lysine | 84 | 78 | 76 | 74 | 78 | 70 | 146 | 184 | 30 | 4 |
Arginine | 66 | 64 | 69 | 66 | 77 | 74 | 79 | 75 | 75 | 11 |
Tryptophan | 11 | 13 | 13 | 10 | 5 | 20 | 9 | - | - | - |
*MDM - mechanically deboned meat
(Pellet and Young 1990)
Table 2-5 - Composition of different cuts of meat
Cut of meat | Protein | Moisture | Pat | Ash | Cal/100 g | |
(%) | (%) | (%) | (%) | |||
BEEF | Chuck | 18.6 | 65 | 16 | 0.9 | 220 |
Flank | 19.9 | 61 | 18 | 0.9 | 250 | |
Loin | 16.7 | 57 | 25 | 0.8 | 290 | |
Rib | 17.4 | 59 | 23 | 0.8 | 280 | |
Topside | 19.5 | 69 | 11 | 1.0 | 180 | |
Rump | 16.2 | 55 | 28 | 0.8 | 320 | |
PORK | Ham | 15.2 | 53 | 31 | 0.8 | 340 |
Loin | 16.4 | 58 | 25 | 0.9 | 300 | |
Shoulder | 13.5 | 49 | 37 | 0.7 | 390 | |
Spare rib | 14.6 | 53 | 32 | 0.8 | 350 | |
LAMB | Breast | 12.8 | 48 | 37 | 0.7 | 380 |
Leg | 18.0 | 64 | 18 | 0.9 | 240 | |
Loin | 18.6 | 65 | 16 | 0.7 | 220 | |
Rib | 14.9 | 52 | 32 | 0.8 | 360 | |
Shoulder | 15.6 | 58 | 25 | 0.8 | 300 |
(Sawyer 1975)
Table 2-6 - Composition of Fats
Total fat (%) | Per cent of total fat |
|||
SFA | MUFA | PUFA | ||
Beef fat | 67 | 43% | 48% | 4% |
Lamb fat | 72 | 50% | 39% | 5% |
Pork fat | 71 | 37% | 41% | 15% |
Chicken, meat and skin | 18 | 33% | 42% | 19% |
Duck, meat and skin | 43 | 27% | 54% | 12% |
Calf liver | 7 | 30% | 18% | 26% |
SFA - Saturated Fatty Acids
MUFA - Monounsaturated Fatty Acids
PUFA - Polyunsaturated Fatty Acids
Table 2-7 - Cholesterol content of various foods (mg/100 g)
Milk | 14 |
Butter | 230 |
Hard cheese | 70-100 |
Eggs | 450 |
Egg yolk | 1 260 |
Meat and poultry | 60-120 |
Heart | 140-260 |
Brain | 2 000 - 3 000 |
Liver | 300 - 350 |
Fish | 50 - 60 |
Crustacea | 100 - 200 |