The Effects of Different Harvest Times on Quality in Leaf and Leafstalk of Sweet Potato (<i>Ipomoea batatas</i> Lam.)

DOI Web Site

Bibliographic Information

Other Title
  • 採取時期の違いがサツマイモ (<i>Ipomoea batatas</i> Lam.) の葉ならびに葉柄の品質に及ぼす影響
  • 採取時期の違いがサツマイモ(Ipomoea batatas Lam.)の葉ならびに葉柄の品質に及ぼす影響
  • サイシュ ジキ ノ チガイ ガ サツマイモ(Ipomoea batatas Lam.)ノ ハ ナラビニ ヨウヘイ ノ ヒンシツ ニ オヨボス エイキョウ

Search this article

Abstract

<p>  Sweet potato leaves and leafstalks were often harvested and eaten in summertime. However, since the tuberous root part is harvested in October and November, it is inefficient to harvest only the stems and leaves of sweet potatoes in summertime. We examined the differences in leafstalk length, leafstalk width, color, polyphenol content, and radical scavenging activity in the leaves and leafstalks of sweet potatoes that were harvested in August and November using three cultivars: ‘Annou-kogane’, ‘Annou-beni’, and ‘Beniharuka’. We also examined the physical properties of leafstalks exposed to heat. The length of leafstalks harvested in November was longer than those harvested in August. There was no significant difference in color tone or physical properties of leaves and leafstalks between the August and November harvests. Furthermore, the leaves and leafstalks of sweet potatoes had high levels of polyphenol content and antioxidant activity regardless of harvest time. When leafstalks were heated, they softened with all heat methods. These results indicate that the quality of sweet potato leaves and leafstalks, including the tuberous root part, harvested in November are equal or superior to those harvested in August.</p>

Journal

Keywords

Details 詳細情報について

Report a problem

Back to top