Definition of provitamin in English:

provitamin

noun ˈprəʊvɪtəmɪnproʊˈvaɪdəmən

Biochemistry

A substance which is converted into a vitamin within an organism.
〔生化〕前维生素，维生素原
Example sentencesExamples
- Beta carotene, a provitamin found in plants and their pigments, is a benign source of vitamin A and is an antioxidant with possible anticarcinogenic properties.
- It is a fat-soluble substance that is divided into retinol and provitamin A. Retinol is the active form of vitamin A usually found in animal products, while provitamin A is found in fruits and vegetables.
- Sweet potatoes are also an excellent source of provitamin A, which the body converts into vitamin A.
- The study supports the recommendation of a safe limit to the amount of vitamin A intake for women and confirms that toxicity is not a concern with provitamins such as beta-carotene.
- However, the Inuit population infrequently consumes vegetables in general, including certain yellow and green ones that contain provitamin A carotene.

Definition of provitamin in US English:

provitamin

nounproʊˈvaɪdəmənprōˈvīdəmən

Biochemistry

A substance which is converted into a vitamin within an organism.
〔生化〕前维生素，维生素原
Example sentencesExamples
- However, the Inuit population infrequently consumes vegetables in general, including certain yellow and green ones that contain provitamin A carotene.
- The study supports the recommendation of a safe limit to the amount of vitamin A intake for women and confirms that toxicity is not a concern with provitamins such as beta-carotene.
- Beta carotene, a provitamin found in plants and their pigments, is a benign source of vitamin A and is an antioxidant with possible anticarcinogenic properties.
- Sweet potatoes are also an excellent source of provitamin A, which the body converts into vitamin A.
- It is a fat-soluble substance that is divided into retinol and provitamin A. Retinol is the active form of vitamin A usually found in animal products, while provitamin A is found in fruits and vegetables.

词汇	provitamin
释义	Definition of provitamin in English: provitamin noun ˈprəʊvɪtəmɪnproʊˈvaɪdəmən Biochemistry A substance which is converted into a vitamin within an organism. 〔生化〕前维生素，维生素原 Example sentencesExamples Beta carotene, a provitamin found in plants and their pigments, is a benign source of vitamin A and is an antioxidant with possible anticarcinogenic properties. It is a fat-soluble substance that is divided into retinol and provitamin A. Retinol is the active form of vitamin A usually found in animal products, while provitamin A is found in fruits and vegetables. Sweet potatoes are also an excellent source of provitamin A, which the body converts into vitamin A. The study supports the recommendation of a safe limit to the amount of vitamin A intake for women and confirms that toxicity is not a concern with provitamins such as beta-carotene. However, the Inuit population infrequently consumes vegetables in general, including certain yellow and green ones that contain provitamin A carotene. Definition of provitamin in US English: provitamin nounproʊˈvaɪdəmənprōˈvīdəmən Biochemistry A substance which is converted into a vitamin within an organism. 〔生化〕前维生素，维生素原 Example sentencesExamples However, the Inuit population infrequently consumes vegetables in general, including certain yellow and green ones that contain provitamin A carotene. The study supports the recommendation of a safe limit to the amount of vitamin A intake for women and confirms that toxicity is not a concern with provitamins such as beta-carotene. Beta carotene, a provitamin found in plants and their pigments, is a benign source of vitamin A and is an antioxidant with possible anticarcinogenic properties. Sweet potatoes are also an excellent source of provitamin A, which the body converts into vitamin A. It is a fat-soluble substance that is divided into retinol and provitamin A. Retinol is the active form of vitamin A usually found in animal products, while provitamin A is found in fruits and vegetables.
随便看	put something in/into put something in/into put something into put something into effect put something into operation put something into operation put something into someone's head put something into someone's head put something into words put something into words put something off put something off spekboom spek-boom speke Speke, John Hanning spekes speleological speleological speleologist speleologist speleologists speleology speleothem spelk