Re: 비타민 A, B, C, D, E, K, P, 중금속의 반감기 - 탐구과제...

[문형철]

BEYOBD REASON

모든 비타민, 미네랄의 반감기를 찾아야 겠다.

코발라민 (Cobalamin) 

- vitamin b 12

약품 종류

화학식: C₆₃H₈₈CoN₁₄O₁₄P

몰 질량: 1,355.38g/mol

CAS ID: 68-19-9

생체이용률: Readily absorbed in distal half of the ileum

신진대사: 간

소실 반감기: Approximately 6 days; (400 days in the liver)

배출: 콩팥

티아민 반감기 9-18일

The half-life of thiamine is 9-18 days. It is excreted by the kidney. Persons may become deficient in thiamine by not ingesting enough vitamin B-1 through the diet or may become deficient through excess use; the latter may result from hyperthyroidism, pregnancy, lactation, or fever.

리보플라빈 반감기 66-88분

Excretion: After a single oral dose, biologic half-life is about 66 to 84 minutes in healthy people. Drug is metabolized to FMN in erythrocytes, GI mucosal cells, and the liver; FMN is converted to FAD in the liver. About 9% of drug is excreted unchanged in urine after normal ingestion.

riboflavin (vitamin B2) - GLOWM

나이아신 비타민  b3  반감기 20-45분

Niacin has a short half-life of 20 to 45 minutes. This is the time it takes for your body to reduce plasma drug levels by half. It takes approximately 5.5 x elimination half- life for a drug to be eliminated from your system

비타민 b6  피리독신 반감기 25-33일(15-22일)

Eighty to ninety percent of vitamin B6 in the body is found in muscles and estimated body stores amount to about 170 mg with a half-life of 25-33 days

어떤 자료는 15일 -22일 

비타민 b7 비오틴 2시간

Biotin has a very short circulating half-life of two hours. It should be cleared from the circulation within 5 half-lives. The authors recommended that patients taking biotin supplements should refrain from taking them for 72 hours before having their blood drawn for laboratory tests

중금속의 반감기

독소	반감기
비소	2-4일
벤젠	0.5-1일
카드뮴	16년
클로르데인	3-4일
DDT	6-10년
디엘드린	2-12개월
에탄올	시간당 15%
납	1-1.5개월(뼈속에 있는 납 20-30년)
수은	2개월
독소에 대한 항체형성	찍내 독소가 임계치를 넘을때
독소에 대한 항체	3-8주