Effects of Na2CO3 and NaOH on pasting properties of selected native cereal starches
Using a Rapid Visco Analyzer (RVA), it was revealed that 2 alkalizing agents (Na2CO3 and NaOH) had a far larger effect on pasting properties of nonwaxy starches (wheat, corn, rice) compared with their effect on waxy starches (waxy corn and waxy rice). It was hypothesized that the alkalizing agents h...
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Published in | Journal of food science Vol. 69; no. 4; pp. FCT249 - FCT256 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Oxford, UK
Blackwell Publishing Ltd
01.05.2004
Institute of Food Technologists |
Subjects | |
Online Access | Get full text |
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Summary: | Using a Rapid Visco Analyzer (RVA), it was revealed that 2 alkalizing agents (Na2CO3 and NaOH) had a far larger effect on pasting properties of nonwaxy starches (wheat, corn, rice) compared with their effect on waxy starches (waxy corn and waxy rice). It was hypothesized that the alkalizing agents have a greater propensity to attack the amorphous regions of the nonwaxy starch granules, thereby causing increased leaching of amylose molecules and possibly also some hydrolysis of starch chains. As a result, the RVA pasting profile of a nonwaxy starch, in the presence of alkali, was drastically altered to one that more closely resembled that of its waxy counterpart without added alkali. |
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Bibliography: | istex:AF0DD8FE550550F9B48A5A4E3BE408B971D3B28E ArticleID:JFDSFCT249 ark:/67375/WNG-XHV37FF2-B |
ISSN: | 0022-1147 1750-3841 |
DOI: | 10.1111/j.1365-2621.2004.tb06324.x |