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.

单词	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.
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