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

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.

Investigation of Nutrient Contents in Jujube and Its Orchard Soils under Pesticide-Free Cultivation in Boeun Region

“…대추의 영양성분 및 유효성분에 대한 활성연구 (Hong et al, 2010;Hong et al, 2012;)와 건조에 관한 연구 (Hong et al, 2012;Shin et al, 1999) Choi et. al., 2010; Exch.…”

Investigation of Chemical Properties of the Jujube Orchard Soils at Boeun Region in Chungbuk

“…에 주력하여 오다가 그 이후에 몇몇 학자들에 의하여 병해충 방제연구 (La and Lee, 1984;Bak and La, 1993;Jee et al, 1998), 대추의 영양성분 및 유효성분 활성연구 (Hong et al, 2010;Kim et al, 2011;Hong et al, 2012), 저장연구 (Chung et al, 1995;An and Lee, 1997;Park et al, 2006), 건조에 관한 연구 (Shin et al, 1999;Hong et al, 2012 …”