OBJECTIVE:To explore an economical and practical storage method for angelica roots (Angelica sinensis). Various treatments were used in packaging and storing dry and fresh angelica roots.METHOD:The experiment was designed in single-factor completely random as compared with the traditional stack without package. The character, weight, extract contents and volatile oil were measured within the storage process.RESULT:If stored for long-term use, the dried angelica roots should be packaged with vacuum-exhausted bags cleaned with water, which resulted in less loss in weight, higher extracts and volatile oil. However, if stored for fresh use, the fresh angelica roots should be packaged in vacuum-exhausted bags after cleaned with sorghum alcohol and stored under low temperatures if possible, which resulted in less loss in weight and longer fresh time. Considering volatile oil and extract contents, it is better to use the dried angelica roots for storage.CONCLUSION:If stored for long-term use the dry angelica roots should be packaged with vacuum-exhausted bags cleaned with water, while for fresh use the fresh angelica roots should be packaged with vacuum-exhausted bags cleaned with sorghum alcohol and stored under low temperatures if possible.

OBJECTIVE:Various treatments were used in packaging and storing dry and fresh Radix Astragali in order to explore an economically practical storage method.METHOD:The experiment was designed in single-factor completely random as compared with the traditional stacking without package in which the character, quality, polysaccharide and extract contents were measured.RESULT:If stored for long-term use, the Radix Astragali should be packaged with vacuum-exhausted bags after cleaning by water and dried, which resulted in less weight loss, higher extract and polysaccharide. However, if stored for fresh use, the fresh Radix Astragali should be packaged in vacuum-exhausted bags after cleaning by sorghum alcohol and stored under low temperatures if possible, which resulted in less loss and longer fresh time. Considering polysaccharide and extract content, it is better to use dried the Radix Astragali in storage.CONCLUSION:Before packaged in vacuum-exhausted bags, the dry Radix Astragali should be cleaned by water for long-term use and cleaned by sorghum alcohol for fresh use under low temperatures if possible.

OBJECTIVE: To study grain filling characteristics of triennium-growth Angelica sinensis in order to provide theoretic evidence for determining the adapted harvesting time for seeds. METHODS: 1000-grain fresh and dry weight, 100-grain volume, grain length, width and thickness in different spikes which were measured every day from the 8th day afte the head spike bloomed and finally estimated by Logistic equation. RESULTS: It was the peak filling time when the grain water decreased most rapidly. The grain filling speed, intensity, dry matter accumulation in head spike were all higher than those in the second spike, which resulted in early peak. The seeds in the head spike had advantages in grain filling and their adapted harvesting time should be the 13th day after blooming, when there were 86.2% of dry the maximum matter accumulation and 68.8% as water content in seeds. However, the adapted harvesting time for the seeds in the second spike should be the 14th day after the first spike bloomed, when there were 82.0% of the maximum dry matter accumulation and 72.2% as water content. CONCLUSION: According with the Logistic equation, the grains filling in different spikes had the same duration but differed in the intersity. We should harvest the whole plant seeds at a time, and away the head and below weak spikes before blooming.

目的:为掌叶大黄种子标准化生产提供理论和技术依据.方法:选用开花一致的三年生掌叶大黄种株,开花10 d后定期测定籽粒营养物质积累动态及其发芽特性.结果:灌浆初期籽粒可溶性糖和淀粉积累起点相近,还原糖起点高,但均在花后16 d内增加.之后可溶性糖短暂下降后波动上升,还原糖急剧下降后波动变化.淀粉积累呈"S"型曲线,符合Logistic方程,开花36 d后达到相对稳定高的水平,积累速率受天气影响大.籽粒蛋白质含量呈"高-低-高"变化趋势.发芽率、发芽势和发芽指数均在花后36 d内随籽粒充实显著提高,与可溶性糖和淀粉含量均呈显著正相关,而与还原糖含量呈显著负相关.结论:掌叶大黄种子属蛋白质含量较低的类型.籽粒淀粉含量达到稳定是种子成熟的标志,成熟度决定其发芽质量,最佳采收期在花后46～52 d(7月上旬),茎秆尚未枯萎,籽粒淀粉含量达11.5%左右为宜.为防落粒应采用网袋采收,风干后脱粒.