منابع مشابه
Browning of model orange juice solution: factors affecting the formation of decomposition products.
A model solution of orange juice was prepared and stored. Factors affecting browning and formation of such decomposition products as 3-hydroxy-2-pyrone (3OH2P), 5-hydroxymethylfurfural (HMF), furfural, 5-hydroxymaltol, and 2-furoic acid were examined. Ascorbic acid (AsA) was essential for browning, which was stimulated by amino acids and citric acid, and repressed by chelators and radical scave...
متن کاملOrange juice and cancer chemoprevention.
Orange juice (OJ) is among the most consumed fruit juices worldwide, and its chemopreventive action is fairly addressed in the literature. This review critically presents the available evidence linking OJ with cancer chemoprevention and on discussing the putative mechanisms and negative health effects. The chemopreventive action of OJ is related to its effect on metabolic enzymes and its antiin...
متن کاملStability of Unpasteurized and Refrigerated Orange Juice
The stability of orange juice obtained from a small extractor and stored in a polyethylene bottle was assessed under isothermal and non-isothermal storage conditions at 4, 8 and 12C for 72 hours. pH, titratable acidity and Brix did not alter significantly during the 72 hours storage. Microbiological analysis showed high initial count for moulds and yeasts that increased in the juice stored for ...
متن کاملFurfural accumulation in stored orange juice concentrates.
The mode of furfural accumulation was determined in aseptically filled containers of single-strength orange juice and concentrates during storage at six different temperatures. Results showed that furfural accumulated in orange juice more rapidly than in concentrates of 34,44, and 58 OBrix. There was 4 times the amount of furfural in orange juice (12 "Brix) than in concentrate (58 "Brix) stored...
متن کاملMelatonin in Apples and Juice: Inhibition of Browning and Microorganism Growth in Apple Juice.
Synthetic melatonin (N-acetyl-5-methoxytryptamine, MT) is popular in the US and Asian markets as a health supplement. Here, we identified a naturally occurring melatonin source in apple juice. Melatonin was present in all 18 apple cultivars tested. The highest melatonin level of the edible part of apple was detected in the apple peel. The melatonin content in 'Fuji' apple juice is comparable to...
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ژورنال
عنوان ژورنال: Journal of the agricultural chemical society of Japan
سال: 1961
ISSN: 0002-1407,1883-6844
DOI: 10.1271/nogeikagaku1924.35.3_285