enzymatic browning
Advances in understanding of enzymatic browning in harvested
... in- volvement of POD in enzymatic browning of litchi fruit. The success of commercial sulphite treatment in controlling litchi pericarp browning is an evidence for the hypothesis that the browning is due ... anthocyanidin degradation, resulting in enzymatic browning (Fig. 1). With an increasing research effort on litchi, our under- standing of the enzymatic browning mechanism i...
Ngày tải lên: 18/05/2014, 20:09
Antisense expression of polyphenol oxidase genes inhibits enzymatic browning in potato tubers
... /RESEARCH Antisense Expression of Polyphenol Oxidase Genes Inhibits Enzymatic Browning in Potato Tubers Christian W.B. Bachem", Gert-Jan Speckmann1, Piet C.G. van der Linde2-5, Frank T.M. verheggen2, Michelle D. Hunt3, John C. Steffens3 and Marc Zabeau1* •Keygene N.V., Agro Business Park90, P.O. Box 216, 6700 AE Wageningen, The Netherlands. :RZ Research B.V., P.O. Box 2, 9123 ZR Mets...
Ngày tải lên: 18/05/2014, 20:10
Control of enzymatic browning in apple with ascorbic aci
... Volume 54, No. 4, 1989-JOURNAL OF FOOD SCIENCE-999 CONTROL OF ENZYMATIC BROWNING IN APPLE. . . Table 5-Inhibition of enzymatic browning in Granny Smith juice by cyclodaxtrins (CD) and combinations ... Volume 54, No. 4, 1989-JOURNAL OF FOOD SCIENCE-997 CONTROL OF ENZYMATIC BROWNlNG IN APPLE. . , Table 1 -Inhibition of enzymatic browning at cut surface of Red Delicious plugs...
Ngày tải lên: 18/05/2014, 20:10
Effects of chitosan coating on enzymatic browning and decay
... on the following scale: 0 =no browning; 1= slight browning or a few browning spots; 2= less than 1/4 browning; 3=1/4–1/2 brown- ing; 4=more than 1/2 browning. The browning grade was calculated ... assessments of browning, enzyme activities, and total phenolics. D. Zhang, P.C. Quantick / Posthar6est Biology and Technology 12 (1997) 195 – 202 197 2.2. Browning assessment Browning...
Ngày tải lên: 18/05/2014, 20:10
Enzymatic browning in apples
... Inhibitors of Enzymatic Browning in Apple GERALD M. SAPERS and MICHAEL A. ZIOLKOWSKI ABSTRACT The effectiveness of ascorbic acid (AA) and erythorbic acid (EA) in inhibiting enzymatic browning ... RECENT CONCERN over the danger to some asthmatics posed by the use of sulfites to control enzymatic browning in cut fruits and vegetables has created a demand for sulfite substit...
Ngày tải lên: 18/05/2014, 20:10
Enzymatic browning in foods
... inhibitors of enzymatic browning are reviewed. The review fouses on compositions that are of practical relevance to food use. KEY WORDS: enzymatic browning, polyphenol oxidase, inhibition, antibrowning ... postharvest handling and pro- cessing. 1 The mechanism of browning in foods is well characterized and can be enzymatic or nonenzymatic in origin. 2 Nonenzymatic brown- ing resu...
Ngày tải lên: 18/05/2014, 20:11
Enzymatic browning reactionsi appleand
... RELATIONSHIP BETWEEN INTENSITY OF BROWNING AND BROWNING PARAMETERS A. Methods for Evaluation of Browning Accurate methods are required for the mea- surement of browning in tissue slices ... contacts). 345 - 346 - 484 IV. CONTROL OF BROWNING The control of enzymatic browning has al- ways been a challenge to the fruit-processing in- dustry. 317 Moreover, the use of s...
Ngày tải lên: 18/05/2014, 20:12
Involvement of peroxidase in enzymatic browning
... with an effective involvement of pear POD in enzymatic browning. Keywords: Enzymatic browning; pear; peroxidase; polyphenol oxidase INTRODUCTION Browning of damaged tissues of fruits and vegetables during ... of pear POD in enzymatic browning. Thus, in the presence of an oxidizing substrate, pear POD will be able to degrade not only the main pear endogenous substrates of enzymat...
Ngày tải lên: 18/05/2014, 20:14
Measurement of enzymatic browning
... spectrophotometric assessments of browning and used to determine the effectiveness of treatments to control enzymatic browning. MATERIALS & METHODS Browning at cut surfaces Apple and ... OF FOOD SCIENCE-1259 MEASUREMENT OF BROWNING IN RAW FRUITS inhibiting browning in apple wedges. Since the most character- istic manifestation of enzymatic browning is sample darkening...
Ngày tải lên: 18/05/2014, 20:15
The biochemistry and control enzymatic browning
... controlling enzymatic browning are presented in this review article, with special focus on the use of antisense RNA as a control method. The biochemistry and control of enzymatic browning ... browning M. Victoria Madinez and John R. Whitaker Browning results from both enzymatic (PPO) and non- enzymatic oxidation of phenolic compounds. Browning usually impairs the se...
Ngày tải lên: 18/05/2014, 20:15