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Physicochemical Properties of Ripe and Dry Jujube ($Ziziphus$ $jujuba$ Miller) Fruits

성숙과 건조 대추의 이화학적 특성

  • Hong, Ju-Yeon (Faculty of Herbal Food Cuisine & Nutrition, Daegu Haany University) ;
  • Nam, Hak-Sik (Faculty of Herbal Food Cuisine & Nutrition, Daegu Haany University) ;
  • Shin, Seung-Ryeul (Faculty of Herbal Food Cuisine & Nutrition, Daegu Haany University)
  • 홍주연 (대구한의대학교 한방식품조리영양학부) ;
  • 남학식 (대구한의대학교 한방식품조리영양학부) ;
  • 신승렬 (대구한의대학교 한방식품조리영양학부)
  • Received : 2011.09.21
  • Accepted : 2012.01.20
  • Published : 2012.02.28

Abstract

This study was carried out to investigate the physicochemical characteristics of maturating and dried jujube. The moisture contents of the unripe and ripe jujube were found to be 84.66 and 66.45%, respectively, but that of the dried jujube was 31.48%. The crude-fat and crude-ash contents of the dried jujube were much higher than those of the maturing jujube. The carbohydrate contents of the unripe, ripe, and dried jujube were found to be 13.51, 27.94, and 61.70%, respectively, and the soluble-protein contents were 0.88, 1.73, and 3.71%. The reducing-sugar content of the dried jujube was 18.82%, higher than that of the ripe jujube. The sucrose contents of the unripe and ripe jujube were 10.15 and 16.66 g/100 g, respectively, and that of the dried jujube was 33.46 g/100 g. The major fatty acids that were found to compose jujube were palmitic, oleic, pamitoleic, linoleic, and linolenic acid. The myristoleic and arachidonic acid contents were higher in the dried jujube than in the ripe jujube, but the palmitoleic acid content was lower in the dried jujube than in the ripe jujube. The major minerals of jujube were found to be Ca, K, Mg, and P, and the total mineral contents of the unripe, ripe, and dried jujube in this study were 343.38, 584.94, and 331.56 mg/100 g, respectively. The polyphenol contents of the unripe, ripe, and dried jujube were 309.12, 248.80, and 23.34 mg/100 g, respectively, while the vitamin C contents were 610.04, 310.22, and 423.27 mg/100 g.

Acknowledgement

Supported by : 대구한의대학교

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