Pariman carbohydrate nai manthet phan tang tang.
1987
Somsri Prabuddham | Kalayanee Tantidham | Chulapor Lertborwornwong
A comparative study was made of the total and component carbohydrate and sugar contents of 75 varieties of sweet potato grown in yield trials at the Phichit Horticulture Research Center in the lower-north of Thailand. Total starch, amylose, amylopectin and sugar contents for the tubers of most varieties were in the following ranges: 63.96 +- 8.44 %, 18.76 +- 4.10 %, 45.25 +- 6.95 %, and 15.30 +- 6.10 %, respectively. Total starch content was positively correlated with content of amylose and amylopectin, but negatively correlated with sugar content. Twenty six varieties which gave analytical values exceeding X BAR + S (average + standard deviation) were recommended for further processing studies for future use in breeding studies. These varieties and their respective characteristics were: i) 12 varieties with a high total starch content-Centenial, RC-3, CI 431-1, RC-8, AIS 051-4,4, Heartogold,3, S3-81-1 and L4-89-1. ii) 11 varieties with high amylose content: RC,RC-8, Contenial, RC-3, Tainung-1, 140, L4-89-1, Heartogold, CI 548-3, RC-1 and 102. iii) 10 varieties with high amylopectin content: AIS057-4,3, Centenial, CI 431-1,4, RC-3, RC-1, Misec 20, CI551-3 and RC-7. iv) 8 varieties with high sugar content: CI591-14, CI590-13, CI590-33, AIS057-4, CI 438-3, Ogud, 030-6 and 04 Roi ET-5.
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