Determination of Isoprenoid Alcohols in Vegetable Oil and Application to Cotton Seed Oil Detection

Murui, Tateo; Kamei, Yumiko

doi:10.5650/jos1956.44.192

Cited by 2 publications

(3 citation statements)

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“…The eluted material was subjected to hydrolysis followed by derivatization into 9-anthroyl nitrile. Fractionation of the derivatives followed by HPLC analysis was carried out to determine the isopropenoid Alcohols content 24,25) …”

Section: Isopropenoid Alcohols Analysismentioning

confidence: 99%

Investigation of Liquid Wax Components of Egyptian Jojoba Seeds

El-Mallah

El-Shami

2009

J. Oleo Sci.

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Egyptian jojoba seeds newly cultivated in Ismailia desert in Egypt promoted us to determine its lipid components. Fatty alcohols, fatty acids, wax esters and sterols patterns were determined by capillary GLC whereas, tocopherols profile, isopropenoid alcohols and sterylglycosides were determined by HPLC. The Egyptian seeds are rich in wax esters (55 %) with fatty alcohols C20:1and C22:1 as major components and amounted to 43.0 % and 45.6 % respectively followed by C24:1 and C18:1(9.6 % and 1.3 % respectively). The fatty acids profile showed that C20:1 is the major constituent (60 %) followed by C18:1and C22:1 (14.5 and 11.8 % respectively) whereas C24:1 was present at low concentration amounted to 1.6 %. In addition, the Egyptian jojoba wax contained C18:2 fatty acid at a level of 8.7 %. Wax esters composition showed that the local wax had C42 and C40 esters as major components amounted to 51.1 and 30.1 % respectively. Also, it had C44 and C38 at reasonable amounts (10.0 and 6.3 % respectively). Whereas C36 and C46 were present at lower concentrations amounted to 1.4 and 1.1 respectively. The sterols analysis showed the presence of campe-, stigma-, b-sito-, and isofuco-sterol amounting to 18.4 %, 6.9 %, 68.7 %, and 6.0 % respectively. The tocopherols pattern revealed that the local seed wax contained g-tocopherol as major constituent (79.2 %) followed by a-tocopherol (20.3 %). b-tocopherol as well as dtocopherol were found as minor constituents. The isopropenoid alcohols and the sterylglycosides (free and acylated) were not detected. The wax is proposed to be used in oleo chemistry and cosmetics.

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Section: Isopropenoid Alcohols Analysismentioning

confidence: 99%

Investigation of Liquid Wax Components of Egyptian Jojoba Seeds

El-Mallah

El-Shami

2009

J. Oleo Sci.

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“…The analysis of minor components of oils, has also received the interest of some authors for the authentication of edible oils (18,19). Thus, the recognition of adulteration by other oils via direct analysis of some minor components, was shown only for olive oil (18).…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the recognition of adulteration by other oils via direct analysis of some minor components, was shown only for olive oil (18). On the other side, isoprenoid alcohol compositions of oils were determined and Grasas y Aceites the method was applied on the detection of cottonseed in other oils (19). Development of steryl ester analysis for the detection of admixtures of vegetable oils using HPLC-GLC has been recently reported (20).…”

Section: Introductionmentioning

confidence: 99%