【作者】 郑玲；

【导师】 周河治；

【作者基本信息】 广西大学 ， 应用化学， 2001， 硕士

【摘要】 龙眼果是岭南佳果。龙眼果肉是我国传统的滋补佳品，具有 很高的营养和药用价值。本研究通过科学的提取工艺，采用化学分 析、薄层层析、紫外扫描及高效液相色谱技术，在国内首次报道导 了龙眼肉中含有与人参皂甙相同的有效活性物质。 龙眼壳经过精心设计的提取工艺，采用化学鉴定和紫外鉴定 相结合的方法，在国内外首次证明龙眼壳的提取物中含有黄酮类物 质。佐证了菲律宾人用龙眼壳制成保健茶的原因。 龙眼核中含有70％的淀粉，经酸水解后，用于发酵生产单细 胞蛋白（Single-Cell Protein，简称 SCP）。通过正交设计摇瓶试验， 其最适的发酵工艺条件是：3％的龙眼核水解液，0.4％尿素， 0.05％MgSO₄7H₂O，0.12％KH₂PO₄，PH5.5－6.0。在180rpm，28℃， 发酵24h，SCP的产量达10.95g/1。实验表明，龙眼核作为一种新 的廉价生产SCP的原料，潜在应用前景广阔，变废为宝，意义深远。更多还原

【Abstract】 Longan is a fruit of south China.The pulp of Longan is traditionalnourishing food in our country, which have high nutritive and medicalvalue. With scientific treat technology, a saponin was isolated from thepulp of Longan, which was identical with ginsenoside─I by chemicalanalysis,Thin-Layer Chromatography, Ultraviolet Spectrophotometry,High Performance Liquid Chromatography. This saponin was for thefirst time isolated from Longan in China.The study of Longan shell was also conducted. Flavonoides werecontained in the extracts of Longan shell based on UltravioletSpectrophotometry(UV) and chemical evidences,which explainedwhy Longan shell was processed into health protection tea byFilipino.Longan stone contain 70% starch,the experiment of production ofsingle-cell protein were carried out from hydrolysate of Longan stone.The optimum medium obtained through a half-replicate experimentare as follows: The concentration of hydrolysate of Longan stone 3%,Urea 0.4%, MgSO4’7H2O 0.05% and KH2PO4 0.l2%, PH5.5-6.0.l0.95g/l biomass concentration were obtained at l80rpm,28C for24hours. Results suggests that it has large potential aPplied value touse Longan stone as a new cheaP raw material for the production ofsingle-cell protein.更多还原