Changes in Pectin, Texture and Structure of Citrus <i>Yuzu</i> during Soaking in Citric Acid, Heating or Pressurization
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- Kuwada Hiroko
- Fukuyama University
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- Jibu Yuri
- Okayama Prefectural University
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- Teramoto Ai
- Kanto Gakuin University
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- Fuchigami Michiko
- Fukuyama University
Bibliographic Information
- Other Title
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- クエン酸浸漬・高圧力・加熱処理によるユズのペクチン,物性,組織の変化に関する研究
- Changes in Pectin, Texture and Structure of Citrus Yuzu during Soaking in Citric Acid, Heating or Pressurization
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Abstract
The relationship between the softening of yuzu and the extraction of pectin during soaking in citric acid, heating or pressurization was investigated. Firmness of peel was greatest to least; pressurized>soaked for 24 hrs at pH 2.7>heated, respectively. The cell walls did not loosen after pressurization. However, after heating, the middle lamella of albedo separated but flavedo did not. The amount of pectin was greatest to least in albedo>flavedo>segment walls>juice sacs, and in flavedo, raw>pressurized>heated>soaked at pH 2.7>boiled flavedo. About 24% of pectin was extracted by soaking at pH 2.7. By soaking, peel softened due to the removal of Ca2+. The pH values of peel and cooked water were 3-4 and 4.02, respectively. Therefore, it was found that degradation of pectin by heating was mainly from hydrolysis and not by trans-elimination.
Journal
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- Journal of Cookery Science of Japan
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Journal of Cookery Science of Japan 45 (3), 181-188, 2012
The Japan Society of Cookery Science
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Keywords
Details 詳細情報について
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- CRID
- 1390282680482018048
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- NII Article ID
- 110009457821
- 130003397367
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- NII Book ID
- AN10471022
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- ISSN
- 21865787
- 13411535
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- NDL BIB ID
- 023823202
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- NDL-Digital
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed