Alterations in lycopene concentration and Z‐isomer content in egg yolk of hens fed all‐E‐isomer‐rich and Z‐isomer‐rich lycopene
Alterations in lycopene concentration and Z‐isomer content in egg yolk of hens fed all‐E‐isomer‐rich and Z‐isomer‐rich lycopene
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饲喂富含全 E 异构体和富含 Z 异构体番茄红素的母鸡蛋黄中番茄红素浓度和 Z 异构体含量的变化
DOI：
10.1111/asj.13276
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发表时间：
2019
影响因子：
2
通讯作者：
Yoshiaki Hayashi
中科院分区：
文献类型：
--
作者：
Masaki Honda;Hiroto Ishikawa;Yoshiaki Hayashi
研究了饲喂番茄红素异构体对蛋鸡蛋品质（如番茄红素浓度和蛋黄颜色）的影响。首先，为了评估番茄红素向蛋黄的转移，在21天的时间里，对母鸡饲喂（全E）‐富含番茄红素的饲粮（番茄红素含量分别为100、200和300 mg/kg）。饲喂4 d以上可检测到蛋黄中的番茄红素，且番茄红素浓度随饲喂量和饲喂期的增加而增加。尽管大多数膳食番茄红素是全E异构体，但蛋黄中超过65%的番茄红素存在asZ异构体。因此，研究了日粮中番茄红素ez -异构体含量（番茄红素含量为200 mg/kg日粮；番茄红素ez -异构体含量为35.1%或61.3%）对鸡蛋品质的影响。随着z‐异构体含量的增加，蛋黄中的番茄红素浓度也随之增加，例如，当饲喂富含z‐异构体（61.3%）的日粮时，蛋黄中的番茄红素浓度大约是饲喂富含（全E）‐番茄红素日粮21天时的3倍。结果表明，番茄红素的z‐异构体比全‐E‐异构体具有更高的生物利用度和/或更高的蛋黄转移效率。
Effects of feeding lycopene isomers to laying hens on egg qualities such as lycopene concentration and color of the yolk were investigated. Firstly, to evaluate the dietary transfer of lycopene to egg yolk, (all‐E)‐lycopene–rich diets (lycopene content, 100, 200, or 300 mg/kg diet) were fed to hens for 21 days. Lycopene in egg yolk could be detected after 4 days or more from the start of feeding, and the lycopene concentration increased according to the feed amount and period. Even though most of the dietary lycopene was the all‐E‐isomer, more than 65% of lycopene in egg yolk was present asZ‐isomers. Thus, the effect of lycopeneZ‐isomer content in the diet (lycopene content, 200 mg/kg diet; lycopeneZ‐isomer content, 35.1% or 61.3%) on egg qualities was investigated. As theZ‐isomer content increased, the lycopene concentration in the egg yolk increased, for example, when fed a diet rich inZ‐isomers (61.3%), the lycopene concentration in the egg yolk was approximately three times higher than when fed the (all‐E)‐lycopene–rich diet for 21 days. The results indicated thatZ‐isomers of lycopene had higher bioavailability and/or higher transfer efficiency to the egg yolk than the all‐E‐isomer.