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Vitamin E Composition of Some Seed Oils as Determined by High-Performance Liquid Chromatography with Fluorometric Detection (1985)

SPEEK, A. J. ; SCHRIJVER, J. ; SCHREURS, W. H. P.

Oxford, UK : Blackwell Publishing Ltd

Journal of food science 50 (1985), S. 0

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ISSN: 1750-3841

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology

Notes: A high-performance liquid chromatographic (HPLC) method is described for the simultaneous analysis of E vitamers α-, and β-, γ- and δ-tocopherol and α-tocotrienol in seed oils. After diluting the oils with n-hexane, E vitamers are separated by HPLC and detected fluorometrically. Standardization is achieved, using electron-impact mass spectrometry and HPLC. Vitamin E composition of several hot and cold pressed seed oils, originating from maize germs, olives, soy beans and from sesame, safflower and sunflower seeds, was investigated. No clear differences were observed between E vitamer concentrations of hot and cold pressed oils of the same origin. On the other hand, vitamin E composition of oils different origin varied widely. Of the oils examined, only maize germ oil contained α-tocotrienol in detectable amounts (about 2%). Esterified E vitamers were not detected.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.1365-2621.1985.tb13291.x

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Persistent low plasma vitamin E levels in premature infants surviving respiratory distress syndrome (1986)

Huijbers, W. A. R. ; Schrijver, J. ; Speek, A. J. ; [et al.]

Springer

European journal of pediatrics 145 (1986), S. 170-171

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ISSN: 1432-1076

Keywords: Newborn ; Plasma vitamin E ; Respiratory distress syndrome

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Abstract Plasma vitamin E levels were determined serially in preterm infants surviving respiratory distress syndrome (RDS) and in premature infants without RDS (control). Vitamin E intakes of the RDS and control infant group were not significantly different. The results of the study show that preterm infants surviving RDS have a persistent low plasma vitamin E level throughout the first 8 weeks of life. In contrast, in premature infants without RDS the plasma vitamin E level gradually increases to the adult level throughout the first 8 weeks of life. It is concluded that data on plasma vitamin E levels in premature infants with and without RDS should not be pooled together to obtain reference values. It is further suggested that premature infants with RDS might need more supplemental vitamin E than premature infants without RDS.