Whole Blood and Plasma Vitamin C Level in Healthy Middle and High School Students in Chinju.
- Author:
Yang Suk JUNG
1
;
Jae Young LIM
;
Eun A KIM
;
Yun Kyeong CHO
;
Chan Hoo PARK
;
Hyang Ok WOO
;
Hee Shang YOUN
;
Gyung Hyuck KO
;
Seung Chul BAIK
;
Woo Kon LEE
;
Myung Je CHO
;
Kwang Ho RHEE
Author Information
1. Department of Pediatrics, Gyeongsang National University College of Medicine, Chinju, Korea.
- Publication Type:Original Article
- Keywords:
Whole blood;
Plasma;
Vitamin C;
Antioxidant;
Adolescents
- MeSH:
Adolescent;
Ascorbic Acid*;
Female;
Gyeongsangnam-do*;
Humans;
Male;
Plasma*;
Recommended Dietary Allowances;
Vitamins*
- From:Journal of the Korean Pediatric Society
1999;42(6):748-755
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: Recommended dietary allowance of vitamin C was determined without considering the important function of vitamin C as a first-line antioxidant. We measured the whole blood and plasma vitamin C concentrations of healthy middle and high school students in Chinju to assess the optimal daily vitamin C requirement in these age groups. METHODS: Whole blood and plasma vitamin C concentrations were measured by the 2, 4-dinitrophenylhydrazine method in 780 students from 1st to 3rd grade of at a middle school and high school in Chinju during June 1996. RESULTS: Whole blood and plasma vitamin C concentrations were 1.42+/-0.40mg/dL and 0.92+/-0.40 mg/dL, respectively. Whole blood and plasma vitamin C concentrations decreased as the school grade became higher. Whole blood and plasma vitamin C concentrations did not differ between females and males in the middle school. However, female high school students had a significantly higher whole blood and plasma vitamin C concentrations than male high school students(P<0.001). Fourteen of 390 middle school students(3.4%) and 23 of 390 high school students(5.9%) had whole blood vitamin C concentrations of less than 0.8mg/dL. Forty-six of 390 middle school students (11.7%) and 113 of 390 high school students(29.0%) had plasma vitamin C concentrations less than 0.6mg/dL. Especially, 45.2% of male high school students had plasma vitamin C concentrations of less than 0.6mg/dL. CONCLUSION: Some adolescents, especially almost half the male high school students, didn't have satisfactory plasma vitamin C levels.
