ISSN:
1750-3841
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Alpha-, beta-, gamma-, and delta-tocopherols (α-, β-, γ- and δ-T) were quantified in pecans (seedlings, Desirable, Stuart and Schley) of 2 crop year by using a direct extraction method coupled with normal-phase HPLC. % recoveries of the assay were about 98, 92, 97, and 97 for α-, β-, γ- and δ-T, respectively. Accuracy was excellent with low % CVs for all tocopherols. Overall precision was good except for δ-T, which was not resolved from an unidentified interference. There were significant differences in tocopherol contents among cultivars (p 〈 0.05). No significant difference was observed in α-TE (tocopherol equivalent) between 1998 and 1999 crop year for Stuart and Schley (p 〉 0.05), but α-TE content of Desirable and seedling did vary (p 〈 0.05). γ-T was the predominant tocopherol for all pecan samples ranging from 20.1 to 29.3 mg/100 g. α-, β-, and δ-T occurred in low levels. Tocotrienols were not present. α-TE ranged from 3.3 to 4.2 in the different cultivars.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2621.2002.tb10288.x
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