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玉米黃素雙棕櫚酸酯乳液制備及其穩(wěn)定性研究
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農(nóng)業(yè)部公益性行業(yè)科研專項(xiàng)(201503142)


Formation and Stability of Zeaxanthin Dipalmitate Emulsions
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    摘要:

    為了探索適宜的玉米黃素雙棕櫚酸酯(ZDP)乳液制備工藝,通過高壓均質(zhì)方法,采用2種天然乳化劑:大豆卵磷脂(SL)和乳清分離蛋白(WPI)和4種合成乳化劑:十聚甘油單油酸酯(PGE18)、十聚甘油單月桂酸酯(PGE12)、蔗糖酯(SE15)和吐溫80(T80),以及2種不同油相:大豆油(SO)和中鏈甘油三酯(MCT),分別制備了ZDP乳液,研究了不同乳化劑種類和質(zhì)量分?jǐn)?shù)以及油相種類對(duì)ZDP乳液性質(zhì)和穩(wěn)定性的影響。同時(shí),在最佳乳化劑條件下,研究了ZDP添加量對(duì)乳液性質(zhì)的影響。研究結(jié)果表明:天然乳化劑乳化制備所得ZDP乳液平均粒徑大,且穩(wěn)定性一般。小分子合成乳化劑制得的ZDP乳液平均粒徑小,但穩(wěn)定性差異大。其中,PGE18為乳化劑時(shí)制備的乳液各項(xiàng)指標(biāo)較好,且在質(zhì)量分?jǐn)?shù)為0.8%時(shí)乳化效果最好。MCT為油相較SO為油相制備所得乳液穩(wěn)定性好。因此,選擇質(zhì)量分?jǐn)?shù)為0.8%的PGE18為乳化劑,MCT為油相,高壓均質(zhì)可以制得粒徑小于200nm的ZDP乳液,且在4℃下貯藏28d仍可保留約90%的ZDP。ZDP添加量變化在4~32nmol/g時(shí)對(duì)ZDP乳液的粒徑和電位無顯著影響。

    Abstract:

    The impact of emulsifier type (soy lecithin (SL), decaglycerol monooleate (PGE18), decaglycerolmonolaurate (PGE12), sucrose ester (SE15), Tween 80 (T80) and whey protein isolate (WPI)) and carrier oil (soybean oil (SO) and medium chain triglyceride (MCT)) on the properties and stability of zeaxanthin dipalmitate (ZDP)fortified emulsions was investigated. The oil in water emulsions using MCT as carrier oil exhibited better physical and chemical stability than the SO emulsions among all emulsifiers, with the exception of T80. PGE18 produced emulsions with the best overall properties and stability. The impact of PGE18 concentrations on the property of ZDP-fortified emulsions was therefore investigated further. The results showed PGE18 at concentration of 0.8% produced emulsions with significantly smaller droplet size and higher particle charge,either preparing with SO or MCT, while MCT emulsion (177.7nm) had smaller droplet size than SO emulsion (200.2nm). Increasing ZDP contents in emulsion from 4nmol/g to 32nmol/g emulsion had no effect on droplet size and particle charge, and produced a color change from light yellow to orange-yellow. Briefly, the ZDP emulsion prepared by PGE18 (0.8%) and MCT through high pressure homogenization had droplet size smaller than 200nm and adequate particle charge (about -16mV), and remained about 90% of the original ZDP after 28 days’ storage at 4℃, which might be used as a potential zeaxanthin supplement or natural pigment in food and beverage products.

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溫馨,李茉,ER?AN Sevcan,胡銳,耿娜,倪元穎.玉米黃素雙棕櫚酸酯乳液制備及其穩(wěn)定性研究[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2018,49(6):354-361. WEN Xin, LI Mo, ER?AN Sevcan, HU Rui, GENG Na, NI Yuanying. Formation and Stability of Zeaxanthin Dipalmitate Emulsions[J]. Transactions of the Chinese Society for Agricultural Machinery,2018,49(6):354-361.

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  • 收稿日期:2018-04-09
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  • 在線發(fā)布日期: 2018-06-10
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