دورية أكاديمية
أعرض في EDS

Bioavailability of vitamin C from kiwifruit in non-smoking males: determination of 'healthy' and 'optimal' intakes.

التفاصيل البيبلوغرافية
العنوان: Bioavailability of vitamin C from kiwifruit in non-smoking males: determination of 'healthy' and 'optimal' intakes.
المؤلفون: Carr AC; Centre for Free Radical Research, Department of Pathology , University of Otago , Christchurch, PO Box 4345, Christchurch , New Zealand., Pullar JM; Centre for Free Radical Research, Department of Pathology , University of Otago , Christchurch, PO Box 4345, Christchurch , New Zealand., Moran S; Centre for Free Radical Research, Department of Pathology , University of Otago , Christchurch, PO Box 4345, Christchurch , New Zealand., Vissers MC; Centre for Free Radical Research, Department of Pathology , University of Otago , Christchurch, PO Box 4345, Christchurch , New Zealand.
المصدر: Journal of nutritional science [J Nutr Sci] 2012 Oct 23; Vol. 1, pp. e14. Date of Electronic Publication: 2012 Oct 23 (Print Publication: 2012).
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Cambridge University Press Country of Publication: England NLM ID: 101590587 Publication Model: eCollection Cited Medium: Print ISSN: 2048-6790 (Print) Linking ISSN: 20486790 NLM ISO Abbreviation: J Nutr Sci Subsets: PubMed not MEDLINE
أسماء مطبوعة: Original Publication: Cambridge : Cambridge University Press, 2012-
مستخلص: Vitamin C is an essential nutrient in humans and must be obtained through the diet. The aim of this study was to determine vitamin C uptake in healthy volunteers after consuming kiwifruit (Actinidia chinensis var. Hort. 16A), and to determine the amount of fruit required to raise plasma vitamin C to 'healthy' (i.e. >50 µmol/l) and 'optimal' or saturating levels (i.e. >70 µmol/l). Leucocyte and urinary vitamin C levels were also determined. A total of fifteen male university students with below average levels of plasma vitamin C were selected for the study. Weekly fasting blood samples were obtained for a 4-week lead-in period and following supplementation with, sequentially, half, one, two and three Gold kiwifruit per d for 4-6 weeks each, followed by a final 4-week washout period. The results showed that addition of as little as half a kiwifruit per d resulted in a significant increase in plasma vitamin C. However, one kiwifruit per d was required to reach what is considered healthy levels. Increasing the dose of kiwifruit to two per d resulted in further increases in plasma vitamin C levels as well as increased urinary output of the vitamin, indicating that plasma levels were saturating at this dosage. Dividing the participants into high and low vitamin C groups based on their baseline plasma and leucocyte vitamin C levels demonstrated that it is critical to obtain a study population with low initial levels of the vitamin in order to ascertain a consistent effect of supplementation.
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فهرسة مساهمة: Keywords: DTPA, diethylene triamine pentaacetic acid; Human saturation levels; Kiwifruit supplementation; Leucocytes; Plasma vitamin C; RDI, recommended dietary intake
تواريخ الأحداث: Date Created: 20140906 Date Completed: 20140905 Latest Revision: 20220318
رمز التحديث: 20231215
مُعرف محوري في PubMed: PMC4153093
DOI: 10.1017/jns.2012.15
PMID: 25191543
قاعدة البيانات: MEDLINE
الوصف
تدمد:2048-6790
DOI:10.1017/jns.2012.15