carotenoid pathway 中文意思是什麼
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With development and maturation of citrus fruit, chlorophyll content of citrus fruit peel decreased, being acompanied by a gradual decrease in a - carotene and p - carotene which are known to be in the upstream of carotenoid biosynthesis pathway. the decrease continued up to complete vanishment of the carotenes. on the other hand, p - cryptoxanthin, p - citraurin and zeaxanthin that are in the downstream of carotenoid biosynthesis pathway increased steadily and became the principal carotenoid components
隨著柑橘果實發育和成熟，果皮葉綠素含量下降，與此同時，位於類胡蘿卜素生物合成途徑上游的-胡蘿卜素、 -胡蘿卜素等胡蘿卜素成分逐漸下降直至消失，而在類胡蘿卜素生物合成途徑下游的-隱黃質、 -檸烏素、玉米黃素等葉黃素成分逐漸上升，使得類胡蘿卜素總量先略微下降后迅速上升；果實褪綠並呈現其特徵色澤。 -
Phytoene desaturase ( pds ) has recently been identified as an important enzyme in carotenoid metabolitic pathway. a new full - length cdna clone encoding phytoene desaturase gene was isolated from stigma of saffron using rt - pcr and race techniques ( ( genbank accession no. ay 183118 ) )
其中主要的活性成分是西紅花甙，需經類胡蘿卜素代謝途徑合成，而八氫番茄紅素脫氫酶（ phytoenedesaturase ）是此途徑中的一個早期關鍵酶。
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