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On the flavour volatiles of fats and fat-containing foods. I
ON THE FLAVOUR VOLATILES OF FATS AND FAT-. CONTAINING FOODS. I.- Degradation of the Peroxides of. Autoxidised Sunflower and Linseed Oils.
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oxidation of lipids in food - Polish Journal Of Food And Nutrition
Also chromatographic analyses of volatile compounds generated in the lipid oxidation process included static ... others. All foods that contain lipids, even at a very low level. (<1%), are ..... flavours due to oxidative and non-oxidative degradation processes .... assess the quality of fats and fat-containing foods. Peroxide.
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Chemistry of Beef Flavor - Beef Research
myriad of substances present in the food product from the onset or ... A wide array of flavor-active volatiles occur in beef (acids, .... fat, found that any sample containing a beef constituent (lean .... Microbial degradation of lipids into flavor precursors should not ..... additive that accelerates oxidation of fats or oils resulting in.
[ The Chemistry of Beef Flavor.pdf - Read/Download File

Volatile Compounds from Heated Beef Fat and - ACS Publications
May 4, 1984 ... compounds may react with some nitrogen-containing compounds such as an amino ... indicate that fat plays an important role in the formation of flavors in cooked foods. Fats used for frying are usually heated over a prolonged ...... Strecker degradation product of glycine, was identified in trace quantities.
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Principle of Meat Aroma Flavors and Future Prospect - InTech
eating quality of meat, acceptance and preference by consumers. The aroma ... teristics of cooked meats are derived from volatile flavor components which derive from ... gen and sulfur-containing compounds and other heterocyclic compounds as well. ..... showed that fat-supplemented diets had large effect on the fatty acid ...
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6 Oxidative pathways to the formation of off-flavours - Springer
peroxides and secondary volatile oxidation products that gives rise to off-flavours in oils ... order to maintain food quality and prolong the shelf-life of fats and fat- containing ... in oils and lipid-containing foods, and thus renders them unpalatable. ...... following sections explain mainly the degradation of monohydroperoxides of.
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Chemistry of Deep-Fat Frying Oils
Frying time, food surface area, moisture content of food, types of ... desirable deep-fat fried flavor, good color, and crispy texture. Over- ... the remaining volatile compounds in oil undergo further chemical ... fats and oils for hydrolysis (Nawar 1969). ..... this increased the rates of oxidation and thermal degradation of oil.
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Measuring Rancidity in Fats and Oils - NP Analytical Laboratories
Fats and oils play an important role in the flavor, aroma, texture, and nutritional quality of foods, pet foods, and ... The product may contain almost no fat or .... aldehydes like hexanal, leaving behind a non-volatile portion of the fatty acid that .
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5 Aroma Compounds
Aroma substances are volatile compounds which are perceived by the odor ... or taste, or both, resulting in an off-flavor. 5.1.2 Impact Compounds .... of foods containing the same aroma substances ... Degradation of tryptophan to o-amino- acetophenone. Milk fat. Metallic. Autoxidation of .... Fats and oils contain volatile and ...
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A method for analyzing volatile alkanals from autoxidizing fats
Tile volatile carbonyls were isolated from the fat (5-io g) by steam distillation by using an ... types are formed as secondary degradation products in tile autoxidation of fats. ... of one or more of the "off-flavour alkanals" to characterize the rancidity of fats. ... The Celite was then impregnated with a solution containing 0.5 g of 2 ...
[ 1-s2.0-S0021967301977830-main.pdf?_tid=0f3aa4d2-a85b-11e4-b110-00000aacb361&acdnat=1422607158_6ee2dc0eac8764b326edcfaac14d1907 - Read/Download File

Flavour Compounds in Cheese (Review)
flora are involved in the degradation of milk proteins, fat and carbohydrates. ... products are converted to volatile flavour compounds. .... the selection, acceptance, and ingestion of a food. Flavour is ... Mature cheese contains numerous volatile ...
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FOOD FATS AND OILS - The Institute of Shortening and Edible Oils
fats and answers to the most frequently asked questions about fats and oils. It is intended ... technologists, food industry representatives, students, teachers, and others having an interest in ..... fatty acids, crude vegetable oils contain approximately .... 1. Some Non-Triglyceride Components of Crude Fats and Oils. Fat or Oil.
[ FoodFatsOils2006.pdf - Read/Download File

Fatty acid composition of oils, their oxidative, flavor and heat
37%OA > Control, and that the order of flavor stability and eating quality of ... increased over animal fats known to contain cholesterol and high amounts of ... oils in salad dressings, during cooking, in deep-fat-frying, and for margarines, ..... Therefore, when estimating the impact of volatile oxidation products on flavor, it is .
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Volatile Neutral Compounds from Heat-degradated Pork Fat and
Laboratory of Food Science & Technology (Animal Products), Faculty of Agriculture, ... The volatile neutral compounds were collected from pork fat heated at 160~ 170°C for ... undesirable flavor through degradation of the fats. Lactones were detected in the volatile .... with each 150 ml of various hexane solutions contain-.
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THERMAL DESORPTION STUDIES OF VOLATILES RELEASED
Lipid degradation occurs extensively during deep fat frying, and controlling it is a great ... unsaturated fats in frying oils, a more complete understanding of these pathways becomes critical. To gain ...... Flavors associated with fried foods also come from these ..... Each oil contains differing amounts of fatty acids, with each fatty ...
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Use of the activation energy concept to estimate the quality
Activation energy flavors olive oil oxidation packaging shelf-life prediction ... P.A., and C.H. Lea, The Flavor Volatiles of Fats and Fat Containing Foods, II.
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Degradation and Nutritional Quality Changes of Oil During Frying
Deep-fat frying is probably one of the most dynamic processes in all of food processing. ... sensory characteristics, including fried food flavor, golden brown color, and a ... changes in the frying fats also affect the physical characteristics of the oil and .... degradation are secondary decomposition products, and the non- volatile ...
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Sheepmeat flavour and odour - Premier 1 Supplies
3.6 Oxidation of sheepmeat fat and effects on flavour. .... food with volatile compounds with high partition coefficients, such as peanut butter, .... Lamb fat also contains relatively high levels of oleic acid .... The majority of polyunsaturated fats .... Meat flavour develops during cooking from the degradation and reaction of water.
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Importance of Oxidative Stability in the Shelf Life of Foods and
include moisture loss/gain, fat degradation or migration, alterations in colour ... ( and other food components). This chemical ... some of these flavours caused by degradation of fats can be desirable in .... the volatile oxidation products that are generated are captured in a vessel containing water and measured continuously  ...
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X79-xaé'a - US Army NSRDEC
Food flavor precursors responsible for the productivity of volatile flavors are given in Table II. Aqueous flavor ... 100—270°C, these compounds undergo thermal degradation, producing .... Pork fat contains more unsaturated fatty acids than beef and its linoleic acid ... Table IV. Heat Produced Carbonyls In Red Meat Fats.
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