我的账户 7×24小时客服热线:400-829-7929 语言:
热门产品: 人参皂苷Rh2,人参皂苷Rg3,胡萝卜苷, 木犀草苷
产品分类
在线咨询
联系电话:
销售:
400-829-7929(7*24小时)
028-82633860
028-82633397 
028-
82633165
技术服务和产品定制:
028-82633987
在线服务:  
沈帅 
文静  点击这里给我发消息
贺丹丹  
点击这里给我发消息
      
文献信息

Direct study of minor extra-virgin olive oil components without any sample modification. 1H NMR multisupression experiment: A powerful tool

期刊名:Food Chemistry
文献编号:
文献地址: http://www.sciencedirect.com/science/article/pii/S0308814617301978
发表日期:1 August 2016
Proton Nuclear Magnetic Resonance (1H NMR) was employed to study monovarietal commercial Spanish extra-virgin olive oils (EVOO) (ArbequinaArronizCornicabraHojiblanca and Picual). Each sample was analyzed by a standard pulse and by an experiment suppressing the main lipid signals, enabling the detection of signals of minor components. The aim was to determine the possibilities of both 1H NMR approaches to characterize EVOO composition, focusing on acyl groups, squalene, sterols, triterpene acids/esters, fatty alcohols, wax esters and phenols (lignans, tyrosol, hydroxytyrosol, oleocanthal, oleacein, oleokoronal, oleomissional, ligstrodials and oleuropeindials), and to determine hydrolysis and oxidation levels. The signal assignments (in deuterated chloroform) are thoroughly described, identifying for the first time those of the protons of esters of phytol and of geranylgeraniol. Correct signal assignment is fundamental for obtaining sound results when interpreting statistical data from metabolomic studies of EVOO composition and adulteration, making it possible to differentiate and classify oils.

... and Δ-5-campesterol from Larodan (Malm?, Sweeden); ursolic acid and ursolic acid methyl ester from Extrasynthese (Genay, France); Δ-5-avenasterol from Chemfaces (Hubei, PRC); hydroxytyrosol from Seprox Biotech (Madrid, Spain);
apigenin from Biopurify (Chengdu, PRC ...
相关产品