现有的传统技术一般难以区分压榨芝麻油和精炼芝麻油。本研究以氧化甘油三酯聚合物为内源性指标依据，通过对多个不同品牌的正常压榨芝麻油和多个不同来源的精炼芝麻油进行比较研究，发现正常的压榨芝麻油和精炼芝麻油在氧化甘油三酯聚合物的含量上有极显著性差异（ρ＜0.01），压榨芝麻油中氧化甘油三酯聚合物的含量一般均小于0.5%，其中氧化甘油三酯寡聚物均小于或等于0.1%，而精炼芝麻油中的氧化甘油三酯聚合物的含量均大于0.8%，其中氧化甘油三酯寡聚物均大于0.1%。用氧化甘油三酯聚合物的含量来鉴别压榨芝麻油和精炼芝麻油具有可行性。

The existing traditional technology is difficult to distinguish between squeezing seasame oil and refining sesome oil. In this research,base on oxidized triglyceride polymers as an endogenous index,by comparing many kinds of brands squeezed sesame oil with many different original refining oil,finds that there is a significant difference(ρ<0.01)between the content of oxidized triglyceride polymers in refining sesame oil and that in squeezed sesame oil. So we conclude that squeezed sesame oil and refining sesame oil can be distinguish by the content of oxidized triglyceride polymers.

目的：制备双酚A环氧衍生物的分子印迹聚合物。方法采用沉淀聚合法,以双酚A(bisphenol A, BPA)和双酚A二环氧甘油(bisphenol A diglycidyl ether, BADGE)为双模板分子,α-甲基丙烯酸(methacrylic acid, MAA)为功能单体,三羟甲基丙烷三甲基丙烯酸酯(trimethylolpropane trim ethacrylate, TRIM)为交联剂,偶氮二异丁腈(azodiisobutyronitrile, AIBN)为引发剂,合成了一种高选择性的分子印迹聚合物,运用扫描电镜、红外光谱分析等手段对其形貌、物理特征进行了表征,同时进行了聚合物的静态吸附与动态吸附性能研究。结果合成的分子印迹聚合物(molecularly imprinted polymers, MIPs)对10种化合物的最大平衡吸附量为18.12~27.00 mg/g,对10种化合物的吸附略有区别,但差异不大,而非印迹聚合物(non-imprinted polymers, NIPs)则对10种化合物的吸附量为7.10~10.73 mg/g,说明NIPs吸附是由于存在物理吸附。结论10种目标化合物在MIPs上均有吸附,能够应用于分子印迹-固相萃取-高效液相色谱检测方法的建立。

Objective To synthesize the molecular imprinted polymers (MIPs) of bisphenol A epoxy derivatives. MethodsThe molecular imprinted polymers (MIPs) was synthesized by polymerization for 24 h using bisphenol A and bisphenol A diglycidyl ether as double templates,α-methacrylic acid (MAA) as monomer, trimethylolpropane trim ethacrylate (TRIM) as cross-linker and 2,2-zaobisisobutyronitrile (AIBN) as initiator. The polymers were characterized by IR spectra and scanning electron microscope and the adsorbent capacity and selectivity were also evaluated.Results The max adsorption capacity (Qmax) of MIPs was between 18.12~27.00 mg/g and the max adsorption capacity (Qmax) of NIPs was between 7.10~10.73 mg/g. The prepared MIPs showed a little different absorption abilities to 10 bisphenol A epoxy derivatives.Conclusion The prepared MIPs showed a better absorption of 10 bisphenol A epoxy derivatives and thus could be used to develop a method for the simultaneous determination of bisphenol

该文分析油脂空气氧化、高温氧化、热质变主要劣变路径与产物;评述以氧化产物评价酸败程度策略,经典初级氧化产物、次级氧化产物指标方法,氧化三酰甘油聚合物及高效体积排阻凝胶渗透色谱技术在初榨油质量控制与掺伪鉴别方面应用前景.

The research presented a detailed analysis of the main deterioration pathways and products in oil air oxidation,high temperature oxidation and thermal alteration. Both the evaluation strategy of the rancidity degree by means of oxidative products and the index method for classic primary oxidative products and secondary oxidative products were discussed in the article. The application prospect of oxidized triacylglycerol polymers and high–performance size–exclusion chromatography in controlling virgin oil quality and discerning oil adulteration was also included

利用十二烷基缩水甘油醚(AGE)对聚酰胺-胺(G1 PAMAM-NH2)在碱性条件下改性,制备出一种树枝状-线性聚合物(G1 PAMAM-AGE ).使用FT-IR,1 H NMR、激光粒度仪等手段研究了G1 PAM-AM-AGE的结构和乳液粒径,结果表明产物的接枝率为85％,乳液平均粒径为15．5μm.使用FT-IR、SEM和TG等手段研究了 G1 PAMAM-AGE 处理后的蓝湿革的结构、物理机械性能和热力学性能.结果表明G1 PAMAM-AGE渗入蓝湿革后与胶原蛋白分子间形成了较强的相互作用,使得蓝湿革内胶原纤维束更为紧密,且力学性能和热力学性能均得到了提高.

The dendritic-linear polymer poly(amido)amine-graft-alkyl glycidyl ether (G1 PAMAM-AGE)has been synthesized by the reaction of poly(amido)amine and alkyl glycidyl ether under alkaline conditions in iso-propanol.The structure,grafting rate and average particle size of G1 PAMAM-AGE were investigated by FT-IR,1 H NMR and laser size instrument.The results show that the grafting rate was 85% and the average particle size (APS)of G1 PAMAM-AGE was 1 5 .5μm.The influence of the PAMAM-AGE on the structure,thermal stability and mechanical properties of the wet blue leather were investigated by IR,SEM and TG.The results indicate that the introduced PAMAM-AGE molecules were linked with the collagen fibers by strong interaction, which make the collagen fibers sticking together and improve the thermal stability and mechanical properties of the treated wet blue leather.