α-Tocopherol levels in natural and artificial aging of soybean seeds
نویسندگان
چکیده
منابع مشابه
Tocopherol and Organic Free Radical Levels in Soybean Seeds during Natural and Accelerated Aging.
Soybean seeds which had aged in long-term storage ("natural aging") or by exposure to high temperature and humidity ("accelerated aging") were analyzed for their tocopherol and organic free radical contents. Tocopherol levels remained unchanged during both types of aging. Three principal tocopherol homologues (alpha, gamma, delta) were present in fairly constant proportions throughout. Organic ...
متن کاملNatural diversity of seed α-tocopherol ratio in wild soybean (Glycine soja) germplasm collection
Alpha-tocopherol is one of four tocopherol isoforms and has the highest vitamin E activity in humans. Most cultivated soybean seeds contain γ-tocopherol as the predominant form, and the ratio of α-tocopherol content to total tocopherol content (α-tocopherol ratio) is <10%. Three soybean accessions from Eastern Europe have α-tocopherol ratios of >20%. This higher content is likely due to mutatio...
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Background: Improvement of a-tocopherol content is an important breeding aim to increase the nutritional value of crops. Several efforts have been conducted to improve the a-tocopherol content in soybean [Glycine max (L.) Merr.] through transgenic technology by overexpressing genes related to a-tocopherol biosynthesis or through changes to crop management practices. Varieties with high a-tocoph...
متن کاملOn the mechanism of aging in soybean seeds.
Changes in seeds of soybeans (Glycine max [L.] Merr. var. Wayne) which occur during accelerated aging (41 C, 100% relative humidity) showed subsequent loss of vigor, a decline in early respiratory activity, increased leakage of electrolytes, losses of as much as 10% dry weight from imbibing cotyledons, and a decrease in the swelling response of the imbibing system (seed plus H(2)O). Each of the...
متن کاملEffects of dietary sesame seeds on plasma tocopherol levels.
The tocopherols, the major vitamers of vitamin E, are believed to play a role in the prevention of human aging-related diseases such as cancer and heart disease, yet little is known concerning determinants of their plasma concentrations. Evidence from animal studies suggests that the dietary source of gamma-tocopherol can significantly affect plasma levels of this tocopherol as well as its func...
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ژورنال
عنوان ژورنال: Acta Scientiarum. Agronomy
سال: 2012
ISSN: 1807-8621,1679-9275
DOI: 10.4025/actasciagron.v34i3.12660