本文選題：薰衣草精油微膠囊　切入點(diǎn)：β-環(huán)糊精　出處：《光譜學(xué)與光譜分析》2017年01期

【摘要】：為了解薰衣草精油β-環(huán)糊精包合物的構(gòu)成形式和精油隨溫度變化的緩釋過程,利用傅里葉變換紅外變換光譜(FTIR)技術(shù),對薰衣草精油(LO)、β-環(huán)糊精(β-CD)及薰衣草精油微膠囊(LOM)進(jìn)行紅外光譜對比分析,同時(shí)對不同溫度下精油緩釋過程中微膠囊紅外光譜變化進(jìn)行了分析,并結(jié)合主成分分析,進(jìn)一步探究β-CD包埋LO后物理化學(xué)穩(wěn)定性及LO釋放過程。結(jié)果表明,LO包埋后其特征峰有紅移現(xiàn)象、峰形變寬,這主要受形成分子間氫鍵、p-π共軛現(xiàn)象和β-CD空間結(jié)構(gòu)影響;另外,設(shè)定溫度變化范圍25~95℃,溫度間隔10℃,測定LOM的紅外光譜,以考證β-CD包埋LO的物理化學(xué)穩(wěn)定性及釋放情況,分析實(shí)驗(yàn)結(jié)果表明,LOM中水合物分子較易失去,LOM中的精油組分物理化學(xué)性質(zhì)穩(wěn)定,在95℃時(shí)逸出量小于6.5%,釋放緩慢;對變溫紅外光譜數(shù)據(jù)進(jìn)行主成分分析(PCA),前二個(gè)主成分的累積方差為99.3%,通過主成分載荷分析,PC1成分可認(rèn)為是β-CD特征變量,PC2成分為LO特征變量,主成分結(jié)果表明,LOM包埋精油中酯類物質(zhì)的釋放速度要快于醇類物質(zhì)。采用紅外分析方法簡便快捷,全面了解包埋精油的物理化學(xué)穩(wěn)定性和釋放過程,為薰衣草精油微膠囊釋放過程的研究提供新的理論支持。
[Abstract]:In order to understand the composition of 尾 -cyclodextrin inclusion complex of lavender essential oil and the slow release process of essential oil with temperature, Fourier transform Infrared transform Spectroscopy (FTIR) technique was used.The infrared spectra of lavender essential oil, 尾 -cyclodextrin (尾 -CD) and lavender essential oil microcapsule (Lom) were compared and analyzed.The physicochemical stability and the release process of Lo after 尾-CD entrapped Lo were further investigated.The results show that the characteristic peaks are redshift and the deformation is wide, which is mainly affected by the formation of intermolecular hydrogen bond p- 蟺 conjugation and the spatial structure of 尾 -CD. In addition, the temperature range is 2595 鈩，

本文編號：1720932