不同生境和套种模式对多花黄精根茎主要成分含量的影响

Effect of Different Interplanting Mode on Main Components from Rhizome of Polygonatum cyrtonema

为探究不同生境和套种模式对多花黄精Polygonatum cyrtonema根茎中主要营养成分的影响,通过蒽酮-硫酸紫外分光光度法、凯氏定氮法、硝酸铝比色法、索式抽提法和等离子体光谱仪法,分别测定了浙江省龙泉市5个不同生境和套种模式样地的1年生多花黄精根茎中的多糖、蛋白质、黄酮、粗脂肪和9种矿物质元素(Na、Ca、P、K、Cu、Mg、Mn、Zn、Fe)含量。结果表明:A样地(兰巨乡南山村油茶林)多花黄精根茎中的多糖和蛋白质含量最高,分别为97.50±6.41 mg·g^(-1)和12.40±0.42 g·100 g^(-1);B样地(安仁镇大舍村香榧林)多花黄精根茎中的粗脂肪含量最高,为6.10±0.38 mg·g^(-1);C样地(上垟镇泗源村毛竹林)多花黄精根茎中的黄酮含量最高,为7.22±0.77 mg·g^(-1)。5个样地多花黄精根茎中的9种矿物质元素含量存在较大差异,互有高低。以上结果说明生境和种植模式对多花黄精根茎的主要成分产生了较大影响。

In March 2021,rhizome segments of Polygonatum cyrtonema were interplanted in 5 sample plots under Camellia oleifera stand,Torreya grandis‘Merrillii’and Phyllostachys edulis forest in Longquan,Zhejiang province.In April 2022,rhizomes from different sample plots were harvested and determinations were carried out on contents of polysaccharide,protein,flavone,crude fat,and 9 mineral elements.The results showed that the content of polysaccharide and protein from rhizome under C.oleifera was the highest,97.50±6.41mg/g and 12.40±0.42 g/100g respectively.The crude fat content from that under T.grandis‘Merrillii’forest was the highest,up to 6.10±0.38 mg/g.The content of flavonoids from that under Ph.edulis was the highest,up to 7.22±0.77 mg/g.There was a wide variation in the content of the nine mineral elements in rhizomes from the five sample plots.