Stabilization of Astaxanthin by A Novel Biosurfactant Produced by Rhodotorula mucilaginosa KUGPP-1

Kawahara Hidehisa; Hirai Akihito; Minabe Toshi; Obata Hitoshi

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Stabilization of Astaxanthin by A Novel Biosurfactant Produced by Rhodotorula mucilaginosa KUGPP-1

机译：黏红假单胞菌KUGPP-1生产的新型生物表面活性剂稳定虾青素

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We found that a novel biosurfactant from the cultured broth of red yeast, Rhodotorula mucilaginosa KUGPP-1, originating in the Antarctic, has dispersive power against astaxanthin. The novel biosurfactant was purified from extracts to the ultrafiltration state by acetone precipitation and chromatography on a DEAE-Toyopearl 650M, and gel filtration on a Sephacryl S-400HR. The molecular mass of the novel biosurfactant was estimated to be about 730,000 by gel filtration chromatography. The novel biosurfactant was comprised of sugar and protein in an approximate molar ratio of 9 : 1. The sugars were comprised of mannose, galactose and glucose. The particle size of the astaxanthin (0.13 mu g/ml)micelle was about 410 nm. Astaxanthin was stable to oxidation in the novel biosurfactant micelles. To our knowledge, this is the first report on a glycoprotein type of biosurfactant with astaxanthin-stabilizing ability.

机译：我们发现，来自南极的红色酵母培养液中的新型生物表面活性剂粘菌Rhodotorula mucilaginosa KUGPP-1具有抗虾青素的分散能力。通过丙酮沉淀和DEAE-Toyopearl 650M色谱纯化，并在Sephacryl S-400HR上进行凝胶过滤，从提取物中将新的生物表面活性剂纯化至超滤状态。通过凝胶过滤色谱法估计新型生物表面活性剂的分子量为约730,000。新型生物表面活性剂由糖和蛋白质组成，摩尔比约为9：1。糖由甘露糖，半乳糖和葡萄糖组成。虾青素（0.13μg/ ml）胶束的粒度为约410nm。虾青素在新型生物表面活性剂胶束中对氧化稳定。就我们所知，这是糖蛋白类型的具有虾青素稳定能力的生物表面活性剂的首次报道。

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《Biocontrol Science》 |2013年第1期|共8页
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Kawahara Hidehisa; Hirai Akihito; Minabe Toshi; Obata Hitoshi;
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1. Stabilization of Astaxanthin by A Novel Biosurfactant Produced by Rhodotorula mucilaginosa KUGPP-1 [J] . Kawahara Hidehisa, Hirai Akihito, Minabe Toshi, Biocontrol Science . 2013,第1期

机译：黏红假单胞菌KUGPP-1生产的新型生物表面活性剂稳定虾青素
2. Genome Sequence of a Marine Carotenoid Producing Yeast Rhodotorula mucilaginosa CYJ03 [J] . TANG Wei, WANG Yue, CAI Yali, 中国海洋大学学报（英文版） . 2020,第002期

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Stabilization of Astaxanthin by A Novel Biosurfactant Produced by Rhodotorula mucilaginosa KUGPP-1

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