仙草不同生長期之主成份含量分析

Abstract

以4個仙草品種為材料，於移值後120、150、180及190天分別收穫，以探討生育期長短對仙草莖葉主成份含量變化之影響。試驗結果發現仙草莖葉之粗蛋白質含量隨著生長日數增進而降低，但脂肪含量與纖維含量則隨著生長日數增進而增加。可溶性無氮物（Nitrogen free extract）和乾物質（Dry matter）含量於180天生長期較高。因此，以可溶性無氮物及乾物質含量作為仙草採收指標，則其最適採收期，應當於移植後180天為佳，不需待至植株花蕾形成期。Four varieties of hsian-tsao (Mesona procumbens Hemsl), i. e., small leaf runner type, small leaf bunch type, big leaf bunch type, and big leaf runner type, were harvested on the 120th, 150th, 180th and 190th day after transplanting. Gross composition of stems and leaves were analyzed and compared at these different growth stages.