对甘肃省黄土高原地区分布的山杏资源进行调查,初选出优良单株,测定其果实性状,并进行相关性分析研究,结果表明:山杏果实的各性状在不同植株个体之间存在着较大的变异幅度;各性状指标的变异幅度不一致,其变异系数由大到小依次是果实横径(66.32％)>果实扁径(59.32％)>果实纵径(59.08％)>单果质量(36.88％)>果形指数(29.36％)>果肉厚度(20.47％);果实的各性状中,除果实纵径与果形指数指标呈线性负相关外,其他果实各性状指标间均呈显著或极显著正相关,单果质量与果实大小、果肉厚度密切相关,与果形指数关系相比较而言不密切.

采用烘干、微波干燥、晒干、阴干方式分别对春秋两季采收的肉苁蓉切片进行干燥,测定各处理中肉苁蓉的醇溶性浸出物含量、松果菊苷和毛蕊花糖苷含量.结果表明:秋采肉苁蓉醇溶性浸出物含量、松果菊苷和毛蕊花糖苷总含量均显著高于春采肉苁蓉;春采肉苁蓉中毛蕊花糖苷含量高于秋采肉苁蓉,松果菊苷含量低于秋采肉苁蓉;微波干燥肉苁蓉的毛蕊花糖苷和松果菊苷含量均为最高.研究结论表明,秋采肉苁蓉有效成分总量明显高于春采肉苁蓉,微波干燥为最佳干燥方式.

Objective To explore the optimal storage method, antioxidant activities of fresh Cistanche deserticola fleshy stem were studied in response to the types of packaging and storage temperature during storage. Furthermore, this research will provide theoretical guides to preserve Cistanche deserticola fleshy stem. Methods The fresh fleshy stem of Cistanche deserticola was stored at 4 ℃ and 25 ℃using polyethylene( PE) film, vacuum packaging and vacuum packaging with nitrogen( N2) respectively, and the antioxidant enzyme activities were assayed regularly. Results The preservation temperature of Cistanche deserticola fleshy stem was better at 4 ℃ than that at25 ℃. Under 4 ℃ condition,vacuum packaging with N2 was conducive to maintaining antioxidant capacity. Conclusion The combination of vacuum packaging with N2 and lower temperature can keep better quality in fresh Cistanche deserticola fleshy stem during storage.