Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Determination of Free Sugars in Some Fruits by Liquid Chromatography

고속액체크로마토그래피에 의한 시판(市販) 수종과실류(數種果實類)의 유리당정량(遊離糖定量)

  • Lee, Eung-Ho (Department of Food Science and Technology, National Fisheries University of Pusan) ;
  • Koo, Jae-Geun (Department of Food Science and Technology, National Fisheries University of Pusan) ;
  • Lee, Jong-Soo (Tong Yeung Fisheries Junior College) ;
  • Ha, Jin-Hwan (Department of Food Science and Technology, Jeju University)
  • 이응호 (부산수산대학 식품공학과) ;
  • 구재근 (부산수산대학 식품공학과) ;
  • 이종수 (통영수산전문대학 수산가공과) ;
  • 하진환 (제주대학교 식품공학과)
  • Published : 1984.09.30
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Abstract

In order to estimate the basic data for the processing suitability of fruits, the contents of free sugars in citrus fruits(14 varieties) cultured in Jeju island, and peaches(4), grapes(4), pears(3) and apples(6) obtained from a local market were investigated by HPLC. The sucrose was the most abundant sugar in citrus fruits and peaches, and followed by fructose and glucose in order. The sugar contents in citru fruits was a wide difference according to the variety. In citrus fruit, the sucrose content was about 53 to 65% to total free sugars and the ratio of fructose to glucose was 1.0/0.8-1.1. The sugars present in grapes and pears were fructose of most abundance, glucose and sucrose in order. Jangshiprang pear showed 2 times higher fructose content than other variety. The free sugar in Taeyang and Hongok(Jonathan) apples were fructose, glucose and sucrose in order of abundance which fructose, sucrose and glucose in Golden Fuji and Mutsu.

우리나라에서 가을에 수확되는 과실의 가공적성(加工適性)에 대한 자료를 얻을 목적으로 사과, 배, 복숭아, 포도 및 감귤중의 유리당을 HPLC법으로 정향하였다. 감귤류에 있어서 함량이 많은 것은 sucrose, fructose 및 glucose순이었으며, 품종에 따라 유리당함량의 차이가 심하였고, sucrose는 품종에 따라 약간의 차이는 있지만, 총유리당 함량의 약 $53{\sim}65%$를 차지하였다. 복숭아도 감귤과 마찬가지로 함량이 많은 것은 sucrose, fructose, glucose순이었다. 포도와 배의 경우는 fructose, glucose sucrose순으로 함량이 많았고, 특히 장십랑의 fructose함량은 다른 품종보다 2배이상 높았다. 사과의 경우 태양과 홍옥은 fructose, glucose, sucrose순으로 함량이 많았으나, 골덴, 부사, 인도, 육오는 fructose, sucrose, glucose순으로 함량이 많았다.

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