湘白蜡的光热模拟氧化及产物分析

doi:10.11924/j.issn.1000-6850.2014-0196

中国农学通报 ›› 2014, Vol. 30 ›› Issue (19): 36-44.doi: 10.11924/j.issn.1000-6850.2014-0196

湘白蜡的光热模拟氧化及产物分析

李坤张弘郑华张雯雯

收稿日期:2014-01-20 修回日期:2014-03-05 出版日期:2014-07-05 发布日期:2014-07-05
基金资助:
国家林业公益性行业科研专项 “资源昆虫高效培育与新产品研发” (201204602)。

Analog Oxidation of Hunan Insect Wax on UV irradiation or Heating Conditions and Determination of Oxidation Products

Received:2014-01-20 Revised:2014-03-05 Online:2014-07-05 Published:2014-07-05

摘要/Abstract

摘要： 研究旨在通过模拟湘白蜡在光、热等环境条件下的氧化过程，反映湘白蜡的环境稳定性和氧化特征，以期为湘白蜡的开发利用和科学贮藏提供参考依据。以300nm紫外光辐照和50℃、75℃、100℃热催化作为模拟氧化条件，通过对新鲜及氧化湘白蜡的理化指标、TG与IR分析，揭示氧化湘白蜡与新鲜湘白蜡的性质差异；采用GC-MS对新鲜及氧化湘白蜡的组成分析，明确新鲜湘白蜡及其氧化产物的种类与组成；在此基础上，结合氧化产物特征提出了光、热对湘白蜡氧化过程的催化加速的作用程度及方式。结果表明：光、热对湘白蜡的催化氧化均有一定活性，在45d氧化期内，300nm紫外辐照与50℃热催化对白蜡的氧化较弱，100℃条件下湘白蜡的氧化较为剧烈，酸值达到69.38 mgKOH/g，皂化值达到195.07 mg KOH/g。湘白蜡氧化过程中主要有降解和氧化两种反应。降解是湘白蜡分子中的长碳链裂解缩短的过程，表现为熔融峰值的降低、低熔点组分的增多及氧化产物中高级烷酸碳原子数量的高度连续性及相对含量分布的均衡性；氧化是虫白蜡分子中降解所得的游离烷烃、高级烷醇、高级烷酸继续氧化的过程，表现为酸值、皂化值的升高及羧基红外特征吸收峰的增强与分裂。

关键词: 敌敌畏, 敌敌畏, 成熟雄性小鼠, 生殖器官, 睾酮

Abstract: Hunan insect wax was an important part of Chinese white wax who called Sichuan insect wax. In order to promote development, utilization and scientific storage of Hunan insect wax, simulated oxidation and oxiditives on UV irradiation and heating condition were carried out to ascertain the properties, composition and oxidative characteristics of Hunan insect wax. 300nm UV irradiation and 50℃, 75℃ and 100℃ were selected for oxidation condition. Qualitative differences were reflected by detected to physicochemical index, TG and IR of oxidation products. Compositional analysis of fresh and oxidation Hunan insect wax was detected by GC-MS and varieties and components were ascertained. Oxidation degree and manner of UV-irradiation and heating to Hunan insect wax were explored by above-mentioned detection results. On this basis, comparison and analysis were made between fresh Hunan insect wax and oxidation insect wax. It showed that UV-irradiation and thermal oxidation both worked in the oxidized process of insect wax. During the oxidation of 45d, the oxidation effect was faintish under 300nm UV-irradiation and 50℃ thermal oxidation condition. Hunan insect wax was violently oxidized in the 100℃thermal effect. The acid value and saponification value was 69.38 mgKOH/g and 195.07 mg KOH/g, respectively. Hunan insect wax was oxidized and degraded in the oxidation process. Long carbon chain of Hunan insect wax was shortened and functional group was oxidized in the oxidation process.

李坤张弘郑华张雯雯. 湘白蜡的光热模拟氧化及产物分析[J]. 中国农学通报, 2014, 30(19): 36-44.

参考文献

[1] 陈晓鸣,冯颖.资源昆虫学概论[M].北京:科学出版社,2009:29-30.
[2] 王兴国,刘云法,倪伯文,等.二十八烷醇分布及功能[J].中国油脂, 2002,27(1):54-56.
[3] 屈虹,郭亮霞,王炯明.虫白蜡理化性质的初步研究[J].林产化学与工业,1981,4:44-48.
[4] Yang Pu, Zhu Jiaying, Gong Zhongjun, et al. Transcriptome analysis of the Chinese white wax scale Ericerus pela with focus on genes involved in wax biosynthesis[J]. PLoS ONE,2012,7(4):35719.
[5] 候晓艺,曹梦晔,巩江,等.虫蜡的药学研究状况[J].安徽农业科学, 2011,39(5):2817-2818.
[6] 许华.虫白蜡及其伪品石蜡的鉴别[J].时珍国医国药,1998,9(5): 445.
[7] 杨璞,徐冬丽,陈晓鸣,等.蜡质合成途径及关键酶的研究进展[J].中国细胞生物学学报,2012,34(7):695-703.
[8] 王荣林.虫白蜡的简易精制法[J].中国中药杂志,1990,15(11):36-37.
[9] Zhang Ruguo, Zheng Hua, Zhang Hong, et al. Thermal analysis of four insect waxes based on differential scanning calorimetry (DSC) [J]. Procedia Engineering, 2011,18:101-106.
[10] Yang Pu, Zhu Jiaying, Chen Xiaoming, et al. Isolation and characterization of microsatellite loci from the Chinese white wax scale Ericerus pela Chavannes (Homopetera: Coccidae)[J]. African Journal of Microbiology Research,2011,5(10):1246-1248.
[11] 张长海.白蜡虫在我国的地理分布[J].林业科学研究,1991,4(2): 192-195.
[12] 陈晓鸣,陈勇,王自力,等.影响白蜡虫泌蜡主要气候因子及白蜡虫生态适应性分析[J].昆虫学报,2007,50(2):136-143.
[13] 焦懿,赵苹.不同产地白蜡虫(Ericerus pela Chavannes)产卵期天敌的种类及其群落结构的研究[J].生态学报,2001,21(7):1149-1152.
[14] 吴次彬,李朝霞,孙光荣.川、滇、黔白蜡虫几个代表性地方虫种经济状况的比较研究[J].四川大学学报:自然科学版,1998,25(2):230- 234.
[15] 陈晓鸣,陈勇,周朝鸿,等.白蜡虫泌蜡研究 I不同地理种源泌蜡比较[J].林业科学研究,1997,11(1):35-38.
[16] 陈勇,陈晓鸣,王自力,等.白蜡虫泌蜡研究 II不同寄主植物上的泌蜡比较[J].林业科学研究,1998,11(3):285-288.
[17] 龙村倪.中国白蜡虫的养殖及白蜡的西传[J].中国农史,2004(4): 18-23.
[18] 王有琼,段琼芬,孙龙,等.虫白蜡的碱炼脱酸[J].化学试剂,2005,27 (2):124-125.
[19] 赵虹,孙龙,段琼芬.虫白蜡三项理化指标的测定[J].林业科技开发, 2003,17(3):42-43.
[20] 陈国平,周平.SN/T 1107—2002,中华人民共和国出入境检验检疫标准—出口蜂蜡检验规程[S].北京:中华人民共和国国家质量监督检验检疫总局,2002:1-9.
[21] 李岂凡,周武,张彬.高纯度二十八烷醇的制备与应用[J].江西化工, 2008(4):5-8.
[22] Li Kun, Zhang Ruguo, Zhang Hong, et al. Study on the stability of insect wax during storage period[J]. Advanced Material Research, 2012,420:481-489.

湘白蜡的光热模拟氧化及产物分析

Analog Oxidation of Hunan Insect Wax on UV irradiation or Heating Conditions and Determination of Oxidation Products

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 6

编辑推荐

Metrics

本文评价

关于本刊

作者中心

审者中心

在线期刊

联系我们

[1]	赵庆凯. 中草药饲料添加剂对黄鳝性激素含量的影响[J]. 中国农学通报, 2014, 30(32): 38-42.
[2]	唐若依隋金玲. 敌敌畏对雄性小鼠生殖器官重量指数及性激素水平的影响[J]. 中国农学通报, 2013, 29(2): 12-15.
[3]	陈青,卢芙萍. 海南豇豆蚜对敌敌畏、三氟氯氰菊酯、辛硫磷和氰戊菊酯的敏感性测定[J]. 中国农学通报, 2009, 25(13): 179-181.
[4]	信富钰,,李文立,侯明海,李彦芹,王玲玲,宋杰,仲跻峰. 不同锌水平对荷斯坦种公牛精液品质及血液理化指标的影响[J]. 中国农学通报, 2007, 23(6): 47-47.
[5]	蔡慧娟. 杀虫剂对不同蔬菜上小菜蛾毒力及种群动态的影响[J]. 中国农学通报, 2006, 22(8): 499-499.
[6]	徐颖张美勇杨茂林. 核桃生殖器官的矿质营养动态[J]. 中国农学通报, 2004, 20(2): 132-132.