At present, the technology used for the extraction and purification of Camellia oleifera saponins generally has the problems of high cost and low purity, and the quantitative detection of Camellia oleifera saponins also has the problems of low sensitivity and easy interference from impurities. To solve these problems, this paper aimed to use liquid chromatography for the quantitative detection of Camellia oleifera saponins, and to adjust and optimize the related conditions. In our study, the average recovery of Camellia oleifera saponins obtained was 100.42%. The RSD of precision test was 0.41%. The RSD of the repeatability test was 0.22%. The detection limit of the liquid chromatography was 0.06 mg/L, and the quantification limit was 0.2 mg/L. In order to improve the yield and purity, the Camellia oleifera saponins were extracted from Camellia oleifera Abel. seed meal by methanol extraction. Then, the extracted Camellia oleifera saponins were extracted with an ammonium sulfate/propanol aqueous two-phase system. We optimized the purification process of formaldehyde extraction and aqueous two-phase extraction. Under the optimal purification process, the purity of Camellia oleifera saponins extracted by methanol was 36.15%, and the yield was 25.24%. The purity of Camellia oleifera saponins obtained by aqueous two-phase extraction was 83.72%. Thus, this study can provide a reference standard for rapid and efficient detection and analysis of Camellia oleifera saponins for industrial extraction and purification.

Nanocapsule preparation technology, as an emerging technology with great development prospects, has uniqueness and superiority in various industries. In this paper, the preparation technology of nanocapsules was systematically divided into three categories: physical methods, chemical methods, and physicochemical methods. The technological innovation of different methods in recent years was reviewed, and the mechanisms of nanocapsules prepared via emulsion polymerization, interface polymerization, layer-by-layer self-assembly technology, nanoprecipitation, supercritical fluid, and nano spray drying was summarized in detail. Different from previous reviews, the renewal iteration of core–shell structural materials was highlighted, and relevant illustrations of their representative and latest research results were reviewed. With the continuous progress of nanocapsule technology, especially the continuous development of new wall materials and catalysts, new preparation technology, and new production equipment, nanocapsule technology will be used more widely in medicine, food, cosmetics, pesticides, petroleum products, and many other fields.

In comparison with the gaps between the development of bamboo industry Jiangxi Province and that of Zhejiang Province, the existing problems in bamboo industry of Jiangxi Province were analyzed and some suggestions of developing bamboo industry of Jiangxi Province were put forward.

<正>受去年下半年以来国际金融危机的巨大冲击及其给我国宏观经济带来的严重影响,去年10月份以后,江西省主要林产品价格一路下滑,企业产品库存增加,生产经营出现困难,林农增收步伐放缓,林权改革的成果和林业产业发展受到严峻挑战。

由蚊虫传播的疟疾、丝虫病、流行性乙型脑炎和登革热等疾病对人类造成了巨大灾难.目前防治蚊虫危害的主要办法就是使用化学杀虫剂和蚊虫驱避剂.

对江西兰科植物资源进行了初步调查研究,发现江西兰科植物资源比较丰富,其中有疗效较好的中草药18个属,24种。对这24种植物的药理、药效和资源分布进行分析和总结,并探讨江西兰科药用植物的利用与保护。

对野菊花黄色素的提取条件进行了系统的研究。结果表明，提取的最佳方案是：pH值为3.0的99.7％的无水乙醇为浸提剂，按野菊花粉重与浸提剂体积比为1：8投料，在温度为40℃下浸提两次，每次浸提时间为11h。

对野菊花黄色素的提取条件进行了系统的研究.结果表明,提取的最佳工艺条件是:以pH值为5.0的体积分数99.7%的无水乙醇为浸提剂,按每克野菊花粉加浸提剂10#mL的比例投料,在温度60℃下,浸提时间为5h.

对虎杖黄色素的提取条件进行了系统的研究,确定了最佳提取溶剂及最佳提取工艺.