碩士 / 實踐大學 / 食品營養與保健生技學系碩士班 / 97 / The purpose of this study was to develop counting systems for vitamin B12 and folic acid, and their application. The first step was to establish counting systems for vitamin B12 and folic acid, the vitamin B12 and folic acid contents of foods were obtained from USDA Agricultural Research Service Nutrient Data Laboratory, Japan Science and Technology Agency Food Composition Database and the Taiwan Nutrient Data Laboratory Database. The food items divided into twelve categories (cereal grains, seafood, vegetables, meats, eggs, beans, fruits, milks, oils, beverages, seasoning, snacks). Counting systems were represented by the “point” systems : Vitamin B12 ＜50 ng was scored as 0 point, and 0.5 point was added for each additional 100 ng of vitamin B12. Folic acid ＜10 μg was scored as 0 point, and 1 point was added for each additional 20 μg of folic acid. The second step was to apply counting systems. The study collected baseline data from omnivores and vegans widely in a public-owned company and a temple, and used three times of 24-hour recalls assisted by food records for intake estimation of vitamin B12 and folic acid. Sixty-two people (male: 12, female: 50), 13 vegans and 49 omnivores were recruited. Mean age is 51.7 years old (male: 49.2, female: 52.3). Mean body mass index is 23.5 (male: 25.3, female: 23.1). 77.3% did not take medication, 36.4% took nutritional supplements. The intensity of physical activity was low for both omnivores and vegans. Mean intake of vitamin B12 of all subjects reached DRIs (2400 ng/d; Vitamin B12 points: 12). Mean intake of vitamin B12 without nutritional supplements of omnivores was higher than vegans (P=0.005); while mean intake of folic acid did not reached DRIs (400 μg/d ; Folic acid points: 20). For all subjects, intake of vitamin B12 without nutritional supplements and Vitamin B-points was highly correlated (r=0.965, P=0.000). Vitamin B intake and points of omnivores was highly correlated (r=0.960, P=0.000); vitamin B intake and points of vegans was moderately correlated (r=0.493, P=0.177). For all subjects, intake of folic acid without nutritional supplements and points was moderately correlated (r=0.518, P=0.000). Folic acid intake and points of omnivores was moderately correlated (r=0.505, P=0.000); folic acid intake and points of vegans was highly correlated (r=0.783, P=0.013). For all subjects, vitamin B12 intake with nutritional supplements and points was highly correlated (r=0.991, P=0.000). Intake of folic acid intake with nutritional supplements, and points was also highly correlated (r=0.869, P=0.000). Besides, the counting systems of vitamin B12 and folic acid and actual intakes were moderately to highly correlated, implying that the counting systems might be used as nutritional assessment to estimate peoples’ daily nutrients consumption, in order to ensure sufficient intakes for dietary reference intakes (DRIs), so as to prevent vitamin deficiency related diseases.
| Identifer | oai:union.ndltd.org:TW/097SCC00255008 |
| Date | January 2009 |
| Creators | Yu-Chieh Hung, 洪于絜 |
| Contributors | Li-Yun Liu, Yi-Ping Chang, 劉麗雲, 張宜平 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 141 |
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