Wei sheng yan jiu = Journal of hygiene research · 2013
[UV-visible spectrum study on anti-UV damaging plants extraction].
Аннотация на английскомСтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод пока не подготовлен
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Wang Leping, Li Li, Xu Feng, Zhang Honglian, Sha Zijian
Аннотация
OBJECTIVE: To develop nature agent absorbing ultraviolet from plants for preventing UV damage.
METHODS: Conduct ultraviolet visible spectrum scanning to aqueous extraction and alcohol extraction from polygonatum odoratum and onion. And compare the spectrum of Heilongjiang and Hunan polygonatum odoratum extraction. Dilute 5 times of the aqueous and alcohol extraction from 1g Heilongjiang, Hunan polygonatum odoratum to conduct UV visible spectrum scanning. Dilute 50 times of the aqueous and alcohol extraction of 20 g fresh onion and conduct ultraviolet visible spectra scanning.
RESULTS: For the aqueous extraction of Heilongjiang and Hunan polygonatum odoratum by ultraviolet visible spectrum scan, both of them had strong absorption in the 290 nm to 400 nm while the absorption value of Heilongjiang's is slightly lower than the Hunan's in the ultraviolet region (290 nm to 320 nm) and the absorption value of Heilongjiang's was significantly better than Hunan's in the long-wavelength ultraviolet region (320 nm to 400 nm). For alcohol extraction, the absorption values were significantly different from 290 nm to 400 nm. Hunan's was stronger while Heilongjiang's was weaker in 290-320 nm. Onion aqueous extraction had strong absorption only at 358 nm while alcohol extraction has strong absorption from 290 nm to 400 nm.
CONCLUSION: Absorption value of polygonatum odoratum aqueous extraction was stronger than alcohol extraction. Onion alcohol extraction in medium and long wave ultraviolet region had strong absorption spectrum.
METHODS: Conduct ultraviolet visible spectrum scanning to aqueous extraction and alcohol extraction from polygonatum odoratum and onion. And compare the spectrum of Heilongjiang and Hunan polygonatum odoratum extraction. Dilute 5 times of the aqueous and alcohol extraction from 1g Heilongjiang, Hunan polygonatum odoratum to conduct UV visible spectrum scanning. Dilute 50 times of the aqueous and alcohol extraction of 20 g fresh onion and conduct ultraviolet visible spectra scanning.
RESULTS: For the aqueous extraction of Heilongjiang and Hunan polygonatum odoratum by ultraviolet visible spectrum scan, both of them had strong absorption in the 290 nm to 400 nm while the absorption value of Heilongjiang's is slightly lower than the Hunan's in the ultraviolet region (290 nm to 320 nm) and the absorption value of Heilongjiang's was significantly better than Hunan's in the long-wavelength ultraviolet region (320 nm to 400 nm). For alcohol extraction, the absorption values were significantly different from 290 nm to 400 nm. Hunan's was stronger while Heilongjiang's was weaker in 290-320 nm. Onion aqueous extraction had strong absorption only at 358 nm while alcohol extraction has strong absorption from 290 nm to 400 nm.
CONCLUSION: Absorption value of polygonatum odoratum aqueous extraction was stronger than alcohol extraction. Onion alcohol extraction in medium and long wave ultraviolet region had strong absorption spectrum.