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味精的主要成分是什么

來(lái)源:鮮淘網(wǎng) 2019-06-22 17:02:42      水果之家王子 手機(jī)版

　　味精的主要成分是谷氨酸鈉，通俗的說(shuō)是一種特殊成份的鹽，由鈉離子與谷氨酸根離子組成。鈉離子是一種金屬元素，谷氨酸則是一種有益于人體的氨基酸成份。在煉制味精的過(guò)程中，提取了經(jīng)發(fā)酵提純的谷氨酸鈉結(jié)晶，是非常提鮮的調(diào)味品。

　　味精的主要成分

味精的主要成分是什么

　　味精主要成份是提純后的谷氨酸鈉，是以糧食為原料，以微生物發(fā)酵、提取、精制而成的產(chǎn)品，一種專門(mén)調(diào)味的佐料成份。

　　谷氨酸鈉是一種氨基酸谷氨酸的鈉鹽，谷氨酸鈉外觀為無(wú)色的晶體，它的水溶性非常好，谷氨酸鈉的水溶性很好，在100毫升水中可以溶解74克谷氨酸鈉，20度的水溫也可以將它溶解掉。

　　味精加熱至100度時(shí)，谷氨酸鈉中有0.3%含量會(huì)自動(dòng)生成為焦谷氨酸鈉，對(duì)人體影響極微，在232℃時(shí)解體熔化。

　　谷氨酸由蛋白質(zhì)分解而來(lái)，味精進(jìn)入腸道被吸收而分解成的谷氨酸，是人體需要的氨基酸之一，屬于氨基酸的其中一種，在肝臟中參與糖代謝以及肝臟的解毒過(guò)程，在大腦中參與蛋白質(zhì)及糖的代謝。

　　人體的味覺(jué)器官中存在著氨基酸特異性受體，能使人們感到可口的鮮味，從而使味精發(fā)揮增進(jìn)食欲的作用，還能誘導(dǎo)消化液的分泌，促進(jìn)食物的消化吸收。

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