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Quality Changes of Citrus kiyomi by Chitosan and Calcium Treatment and Storage Warehouse  

김성학 (제주도농업기술원)
고정삼 (제주대학교 원예생명과학부)
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Food Science and Preservation / v.10, no.2, 2003 , pp. 147-153 More about this Journal
Abstract
Quality changes of citrus tangor(Citrus kiyomi) during storage by chitosan and calcium treatment and storage warehouse were investigated. Citrus fruits were treated with 2000-folds diluted iminoctadime-triacetate solution, and 1.5% chitosan with 0.5% CaC1$_2$solution, and were at 30$^{\circ}C$ for 24 hr before storage. The citrus fruits of about 12 kg/26 L plastic container were stored at 4$^{\circ}C$ with 87% relative humidity. Decay ratio of citrus with precise temperature and humidity control were lower than the others during storage. Weight loss, moisture content of peel and flesh were decreased slowly during storage. 15 ∼ 18% of acid content were decreased on 120 days' storage. Vitamin C content were decreased rapidly during storage. 23 free amino acids were detected. Isoleucine and leucine were not detected, but alanine was detected only on stored citrus. Citrus fruits was kept well on its commodity quality for 3 month at 4$^{\circ}C$ with 87% relative humidity.
Keywords
Citrus kiyomi; storage; storage warehouse; chitosan; calcium;
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