Dairy Chemistry And Biochemistry

VITAMINS IN MILK AND DAIRY PRODUCTS^283 CHaOH I HO CHpOH HsC Pyridoxine CHaOH 6.27 "0 H3C Pyridoxal CHz-NHz CHaOH 6.28 "0 H3C Py ...

284 DAIRY CHEMISTRY AND BIOCHEMISTRY respectively). The corresponding UK RNI value for B, is 15 pg g-’ protein for adults. Impor ...

VITAMINS IN MILK AND DAIRY PRODUCTS 285 6.3,7 Folate Folate consists of a substituted pteridine ring linked through a methylene ...

286 DAIRY CHEMISTRY AND BIOCHEMISTRY Folate deficiency impairs cell division and protein synthesis; symptoms include megaloblast ...

VITAMINS IN MILK AND DAIRY PRODUCTS 287 through the packaging material) has an important influence on the stability of folate du ...

(^288) DAIRY CHEMISTRY AND BIOCHEMISTRY 6.34 Vitamin B,, tion in milk is not influenced greatly by feed, breed or season. Higher ...

VITAMINS IN MILK AND DAIRY PRODUCTS^289 stability of B,, in UHT milk. Losses during storage at 7°C are minimal for up to 6 month ...

290 DAIRY CHEMISTRY AND BIOCHEMISTRY Ascorbic acid is a strong reducing agent and therefore is an important antioxidant in many ...

VITAMINS IN MILK AND DAIRY PRODUCTS 29 1 yogurts is similar to, or a little lower than, that in milk (Appendix 6A); cheese conta ...

Vitamin Vitamin Ribo- Vitamin Vitamin Panto- Retinol Carotone D E Thiamin flavin Niacin Trp-60 B, B,, Folate thenate Biotin Prod ...

Cheddar-type Cheese spread, (15% fat) plain Cottage cheese plain reduced fat (1.4% fat) Cream cheese Danish blue Feta Fromage fr ...

7 Water in milk and dairy products 7.1 Introduction The water content of dairy products ranges from around 2.5 to 94% (w/w) (Tab ...

Table 7.1 Approximate water content of some dairy products (modified from Holland et a/., 1991) Product Water (g/lOO g) Skimmed ...

296 DAIRY CHEMISTRY AND BIOCHEMISTRY Table 7.2 Physical constants of water and ice (from Fennema, 1985) Molecular weight Phase t ...

WATER IN MILK AND DAIRY PRODUCTS 297 Figure 7.1 Schematic representations (a-c) of a water molecule and hydrogen bonding between ...

298 DAIRY CHEMISTRY AND BIOCHEMISTRY 4.52 A Figure 7.2 Unit cell of an ice crystal at 0°C. Circles represent the oxygen atoms of ...

WATER IN MILK AND DAIRY PRODUCTS^299 (b) Figure 7.3 The ‘basal plane’ of ice (combinations of two planes of slightly different e ...

300 DAIRY CHEMISTRY AND BIOCHEMISTRY C 4 Figure 7.4 The extended structure of ice. Open and shaded circles represent oxygen atom ...

WATER IN MILK AND DAIRY PRODUCTS 301 (^0) II Figure 7.6 Schematic representation of the interaction of water molecules with carb ...

302 same temperature: DAIRY CHEMISTRY AND BIOCHEMISTRY P Po a W =-. Due to the presence of various solutes, the vapour pressure ...