Soluble and cell wall-bound phenolic acids and ferulic acid dehydrodimers in rye flour and five bread model systems: insight into mechanisms of improved availability

被引:13
作者
Dynkowska, Wioletta M. [1 ]
Cyran, Malgorzata R. [1 ]
Ceglinska, Alicja [2 ]
机构
[1] Natl Res Inst, Dept Plant Biochem & Physiol, Plant Breeding & Acclimatizat Inst, PL-05870 Radzikow, Blonie, Poland
[2] Warsaw Univ Life Sci, Fac Food Sci, PL-02776 Warsaw, Poland
关键词
rye (Secale cereale L; ) bread; phenolic acids; ferulic acid dehydrodimers; arabinoxylan-hydrolysing enzymes; feruloyl esterase; WATER-EXTRACTABLE ARABINOXYLANS; ANTIOXIDANT PROPERTIES; WHEAT-GRAIN; IDENTIFICATION; BRAN; DEHYDROTRIMER; PURIFICATION; METABOLISM; ENDOSPERM; WEIGHT;
D O I
10.1002/jsfa.7007
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
BACKGROUNDThe bread-making process influences bread components, including phenolics that significantly contribute to its antioxidant properties. Five bread model systems made from different rye cultivars were investigated to compare their impact on concentration of ethanol-soluble (free and ester-bound) and insoluble phenolics. RESULTSBreads produced by a straight dough method without acid addition (A) and three-stage sourdough method with 12 h native starter preparation (C) exhibited the highest, genotype-dependent concentrations of free phenolic acids. Dough acidification by direct acid addition (method B) or by gradual production during prolonged starter fermentation (24 and 48 h, for methods D and E) considerably decreased their level. However, breads B were enriched in soluble ester-bound fraction. Both direct methods, despite substantial differences in dough pH, caused a similar increase in the amount of insoluble ester-bound fraction. The contents of phenolic fractions in rye bread were positively related to activity level of feruloyl esterase and negatively to those of arabinoxylan-hydrolysing enzymes in wholemeal flour. CONCLUSIONThe solubility of rye bread phenolics may be enhanced by application of a suitable bread-making procedure with respect to rye cultivar, as the mechanisms of this process are also governed by a response of an individual genotype with specific biochemical profile. (c) 2014 Plant Breeding and Acclimatization Institute, National Research Institute. (c) 2014 The Authors. Journal of the Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
引用
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页码:1103 / 1115
页数:13
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