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HÓA HỌC THỰC PHẨM - CHƯƠNG 7 - CHẤT MÀU TP

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CAÙC CHAÁT MAØU TÖÏ NHIEÂN<br />

Carotenoid<br />

β-Carotene<br />

o<br />

o<br />

o<br />

o<br />

o<br />

o<br />

o<br />

Keát tinh töø benzen-methanol: laêng truï 6 maët maøu tím ñaäm<br />

Keát tinh töø ether petrol: laù hình thoi maøu ñoû<br />

Dung dòch loaõng coù maøu vaøng<br />

Haáp thu cöïc ñaïi / chloroform taïi 497 nm vaø 466 nm<br />

Coù hoaït tính tieàn vitamin A maïnh nhaát<br />

1 IU = 0.6 µg β-carotene = 0,3 µg vit A<br />

ÖÙng duïng: taïo maøu vaøng tieàn vitamin A, choáng oxy hoùa

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