不同品種（系）、植期與貯藏處理之生甘藷抗性澱粉含量研究

Studies on Varieties (Lines), Crop Season, and Storage Period on Resistant Starch in Fresh Sweet Potato

利幸貞(Hsin-Chen Lee) ； 賴永昌(Yung-Chang Lai)

《台灣農業研究》 66卷1期 (2017/03) Pp. 26-33

https://doi.org/10.6156/JTAR/2017.06601.04

摘要

抗性澱粉屬於膳食纖維的指標成分之一，本研究以不同甘藷品種 (系)、植期與貯藏處理來探討生甘藷之抗性澱粉含量研究。試驗結果顯示，甘藷塊根抗性澱粉含量在品種 (系) 與期作間具有極顯著交感效應。抗性澱粉與直鏈澱粉含量在不同甘藷品種 (系) 間有差異，由期作間比較，春作植期明顯高於秋作植期，且抗性澱粉與直鏈澱粉含量在春作植期兩成分具有極顯著正相關。甘藷塊根經過貯藏，各品種 (系) 所含之抗性澱粉含量無明顯的變化，但就甘藷選育及貯運目的之考量，仍以其抗性澱粉含量明顯較高又較耐貯藏之品系為佳。

關鍵字

甘藷 ； 抗性澱粉 ； 直鏈澱粉 ； 膳食纖維

並列摘要

Resistant starch is one of the index components for dietary fiber. Analysis of variance for the effects of crop seasons and varieties (lines) on the resistant starch content of fresh tuberous roots of sweet potato indicated that these two factors interacted significantly. A significant difference in contents of resistant starch was found among varieties (lines), and sweet potato grown in Spring crop had higher value than that grown in Fall crop. The correlation coefficient of resistant starch and amylose content was higher in Spring crop. The resistant starch content in fresh tuberous roots of sweet potato was not significantly changed due to different storage periods. In order to conducive to breeding and storage process, the varieties (lines) of sweet potato had a higher resistant starch content in tuberous roots and a good quality during storage period will be a better choice.

並列關鍵字

Sweet potato ； Resistant starch ； Amylose ； Dietary fiber