Analysis of Chemical Components of Xylem Sap from 'Hayward' Kiwifruit Canes and Processing of Drink Using the Xylem Sap

참다래 'Hayward' 수액의 화학성분 분석 및 수액을 이용한 음료 제조

The chemical components of xylem sap collected from kiwifruit (Actinidia chinensis Planch cv. Hayward) trees were analyzed and processing of xylem sap drink were accomplished to increase utilization of xylem sap as a drink. Water content, soluble solids, viscosity, and pH of the xylem sap were 99.60%, 0.90%, 1.01, and 6.50, respectively. In the xylem sap, fructose was the highest among free sugars followed by glucose, sucrose, galactose, and mannitol. The major inorganic components in the sap were calcium, potassium, and magnesium, and calcium was the dominant among them. Ten kinds of amino acids in the xylem sap were detected by amino acid analyzer, and the major amino acids were glutamic acid, lysine, and isoleucine. Glutamic acid was the most dominant amino acid in the xylem sap. Major compositions of xylem sap drink were 74.5% xylem sap, 15% kiwifruit puree and 10% high fructose. Nutritional facts in drink (252 mL) processed by using the xylem sap were 21.8 g sugar, 23.1 mg calcium, 14.1 mg potassium, 554.5 mg amino acid, and 15.6 mg ascorbic acid.

참다래 수액을 이용 음료수을 제조하기 위해 수액내 화학성분을 조사하였다. 참다래 수액에서 수분 함량, 당도, pH, 산 함량, 탁도 및 점성은 각각 99.6%, 0.90%, 6.50, 0.15%, 0.60, 1.01로 나타났다. 수액내 유리당은 fructose, glucose, sucrose, galactose, manitol가 함유되어 있었는데 당의 대부분은 fructose였다. 수액내 주요 무기물은 칼슘, 칼륨 및 마그네슘으로 칼슘 함량이 상대적으로 가장 높았다. 수액에는 10종의 아미노산이 함유되어 있었는데 이들 중 주요 아미노산은 glutamic acid, lysine 및 isoleucine이었는데 이중 glutamic acid함량이 가장 높았다. 수액을 이용 제조한 다래수액 음료수(252mL)내 영양소 함량에서 당은 21.2g, 칼슘 23.1mg, 칼륨 14.1mg, 아미노산 554.5mg, 비타민 C 15.0mg/252mL이었다.