Beef extract

3 Meat Extracts and Related Products 12.7.3.1 Beef Extract 

In the same way, the cooking water recovered during the production of corned beef can be processed into meat extract. Only this latter source of meat extract is of economic significance. The yield is 4% of fresh meat weight. 

The composition of the extract is given in Table 12.21. For addition to soup powders and sauce powders, the thick pasty meat extract is blended with a carrier substance and vacuumor spray-dried. 

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Methylprednisone 21-acetate (0.5 g), when hydrolyzed by means of aqueous alcoholic potassium bicarbonate yields 16 fnethylprednisone. An alternative method of the preparation of the compound of this example is as follows. Bacillus sphaericus var. fusifermis (A.T.C.C. 7055) is incubated on a nutrient agar (composed of Bacto-beef extract, 3 g Bacto-peptone,... 

To 100 ml of a sterile nutrient broth (composed of Bacto-beef extract, 3 g Bacto-peptone, 5 g per liter of tap water) in a 300 ml flask is added one loopful of the incubated culture and the broth mixture is further incubated for 24 hours at 28°C on a shaking machine. 

Beef extract T ryptone Yeast extract Dextrose Starch... 

Waste disposal site of textile industry Red BLl/Reactive Red-2, yeast extract, beef extract Pseudomonas sp. SUK1 [82, 138]... 

Beef extract, peptone, corn meal, water Steinemema - - - Li(1984)... 

For bacteriological analyses, the commercially available culture media were used Endo agar, elective saline agar, blood agar, thioglycolic medium and beef extract broth (BEB) with 1% glucose. Chocolate agar was used for the isolation of haemophilic flora. 

Table 10 gives the characteristics of hquid waste arising in liver and beef extract production from a biological production pharmaceutical plant [18]. These wastes can be very high in BOD, COD, TS, colloidal solids, toxicity, color, and odor. The BOD/COD ratio of the... 

Table 10 Characteristics of Liquid Waste Arising in Liver and Beef Extract Production from a Biological Production Pharmaceutical Wastewater [18]...

As for the cultivation of other types of marine microorganisms, e.g., those with a specific potential for the production of biologically active metabolites, predominantly small-scale experiments (shake flasks) have been described. Alternatively, artificial seawater or 25 50 75 90% natural seawater has served as a basis for nutrient media. The concentrations of carbon and nitrogen sources reached up to 2 % (w/w) starch, glucose, molasses, glycerol, soybean oil, yeast extract, malt extract, beef extract, peptone, cornsteep liquor and NZ-amine. In the absence of artificial or natural seawater, high concentrations of... 

The total thyroid hormone content of thyroid glands and the ratio of T3 to T4 vary somewhat from one species to another. Thyroid USP preparations are therefore standardized on the basis of their iodine content. Much of the iodine in these preparations is in the metabolically inactive form of iodotyrosines. Thus, a given preparation may satisfy the USP iodine assay requirements and yet contain low amounts of T4 and T3. Thyrar (a beef extract) and Armour Thyroid tablets (a pork extract) are evaluated by additional biological assays to ensure consistent potency from one batch to another. 

In addition to nutritional value and flavor, health concerns must also be a part of any discussion of food quality. Among the most interesting of food products with a health related function are the CLAs or conjugated dienoic derivatives of linoleic acid. The CLAs were originally found in meat (beef) extracts and have been shown to be a potent inhibitor of carcinogen-induced neoplasia in the epidermis and forestomach in mice and of the mammaiy in rats Chapter 21). 

The most important sulfur heterocycles with a five-membered ring and three sulfur atoms are the diastereomeric 3,5-dialkyl-1,2,4-trithiolanes 6. The dimethyl derivatives (6, R - Me) have been found in various cooked foods, such as mushrooms (41), boiled beef (42) commercial beef extract (43), boiled antarctic krills (44), red algae (45), and several model systems containing a source of sulfur (2,19,29), The diethyl derivative (6, R - Et) was identified by Ledl (33) and by Sultan, with propionaldehyde as the starting material. The dipropyl and diisopropyl derivatives (6,... 

Figure 7. Description of the enzyme activity and protein distribution determined in beef extracts cooked to various end-point cooking temperatures (adapted from 2).

Figure 10. Capillary electropherogram of beef extract in the presence of liposomes and a free radical oxidation generator (FROG). Upper chromatogram is the initial unincubated protein profile while the lower profile is the protein profile after one hour incubation with the liposome + FROG system (adapted from 6).

Cooking procedures exert similar effects. Penicillin G was not consistently inactivated by 90 min heating at 100 C in water, milk, and beef extracts, except in extracts of chicken muscle, in which it was less stable (10). In another study, the microbiological activity of penicillin G in buffer and buffered meat homogenates at pH 5.0 and 7.0 was studied (31). Penicillin G was found less stable at pH 5.0 than at 7.0. It was not totally inactivated by 60 min at 100 C in any of the media, but it could be inactivated within 60 min at 117 C or 121 C. 

Fig. 27 HPLC separation of myoglobin and hemoglobin on Bio-Gel TSK Phenyl-5-PW. (A) Standard solution. (B) Ground beef extract. (From Ref. 286.)...

Galceran et al. (199) developed an SPE-HPLC method for the determination in beef extract of five mutagenic amines, namely Trp-P-1 (3-amino-1,4-dimethyl-5//-pyrido[4,3-fc]indole),... 

HAAs HPLC-MS. Supelco LC-CN or Supelco LC-18-DB column. Mobile phase NH4 (acetate) (pH = 6.8)-ACN-MeOH in gradient elution. Low ppb level Cooked beef products, beef extract, fried beef MeOH extraction, cleaning on XAD-2, ethylacetate elution. 1%... 

A digression from irradiated beef components to the few known constituents of beef in the form of beef extract or beef broth is of interest. The substances listed in Table II have been identified (, 7, 19) in various extracts of cooked ground beef. The fact that many of these components of... 

Natural media are those used on the basis of experience and not on the basis of exact knowledge of their composition and action. Natural or complex media usually contain peptones, beef extract, or yeast extract. When a solid medium is desired, a solidifying agent such as gelatin or agar may be incorporated into the medium. Examples of a relatively simple liquid and a solid medium that support the growth of many common heterotrophs are nutrient broth and nutrient agar. Their composition is as follows ... 

Nutrient broth 3 g of beef extract, 5 g of peptone, 5 g of yeast extract, and water to make 1 L. 

Vegetative culture medium (Soluble starch, Peptones, Beef extract, Sodium chloride. Yeast extract, water)... 

Employing aseptic techniques, the inocolum obtained is used to inoculate a 2 L Erlenmeyer flask containing a 500 ml portion of a sterilized vegetative culture medium having the following composition Soluble starch 10 g, Peptones 5 g, Beef extract 5 g, Sodium chloride 5 g, Yeast extract 2.5 g and tap water 1100 ml. 

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