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HÓA HỌC THỰC PHẨM - CHƯƠNG 7 - CHẤT MÀU TP

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Phaûn öùng Maillard<br />

MAØU TAÏO THAØNH TRONG QUAÙ TRÌNH CHEÁ BIEÁN<br />

Ñieàu kieän tieán haønh phaûn öùng<br />

Tyû leä a.a / ñöôøng = 1/3 ÷ 1/2<br />

Noàng ñoä beù: phaûn öùng cuõng xaûy ra<br />

Taêng tyû leä ñöôøng SP caøng deã tan trong nöôùc<br />

Löôïng nöôùc: nöôùc caøng ít phaûn öùng caøng maïnh<br />

Nhieät ñoä: < 0 0 C: phaûn öùng khoâng xaûy ra<br />

Chaát kìm haõm, taêng toác:<br />

Kìm haõm: -CHO, hydroxylamin,<br />

bisulfit Na, K, SO2, SO3, H2SO3<br />

Taêng toác: a. acetic, phosphate<br />

ÖÙùng duïng cuûa phaûn öùng Maillard<br />

SX baùnh mì: maøu saéc voû baùnh mì.<br />

SX bia: Sx malt (ñen, vaøng)<br />

SX röôïu: toån thaát ñöôøng, tinh boät, kìm haõm hoaït ñoäng cuûa E<br />

SX thuoác laù: quaù trình leân men sôïi thuoác laù<br />

SX ñöôøng: saãm ñöôøng.

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