RQ3, A Natural Rebaudioside D Isomer, Was Obtained from Glucosylation of Rebaudioside A Catalyzed by the CGTase Toruzyme 3.0 L

Guo Qingbin; Zhang Tongtong; Wang Nifei; Xia Yongmei; Zhou Zhuoyu; Wang Jian-rong; Mei Xuefeng

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RQ3, A Natural Rebaudioside D Isomer, Was Obtained from Glucosylation of Rebaudioside A Catalyzed by the CGTase Toruzyme 3.0 L

机译：RQ3是一种天然莱鲍迪甙D异构体，从CGTase Toruzyme 3.0 L催化的Rebaudioside A催化的葡萄糖苷化获得

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In this study, a monoglucosyl rebaudioside A product was isolated from the mixture of glucosylated rebaudioside A obtained from the most reported and industrial used cyclodextrin glycosyl transferase, Toruzyme 3.0 L (CGTase, Toruzyme 3.0 L). The molecular structure of the monoglucosyl rebaudioside A was characterized using LC-MS/MS and methylation analysis combined with 1D and 2D NMR, indicating that it is 13-[(2-O-(3-alpha-O-D-glucopyranosyl)-beta-D-glucopyranosyl-3-O-beta-D-glucopyranosyl-beta-D-glucopyranosyl)oxy] ent-kaur-16-en-19-oic acid beta-D-glucopyranosyl ester (also known as RQ3, which naturally exists in Stevia extract as an isomer of rebaudioside D). This study may help to further understand the reaction mechanism of glucosylation of steviol glycoside assisted by Toruzyme 3.0 L in the aspect of molecule linkage pattern, and also benefit the application of the glucosylated rebaudiosides.

机译：在本研究中，从最据报道和工业使用的环糊精糖基转移酶，玫瑰果3.0L（CGTase，Toruzyme 3.0L）中获得的葡萄糖基化的雷丝狄德A的混合物中分离出一种单葡萄糖基重型产品。用LC-MS / MS和甲基化分析与1D和2D NMR联合的甲基葡萄糖基雷胶囊A的分子结构，表明它是13 - [（2-o-（3-α-OD-吡喃葡萄糖基）-Beta- D-吡喃糖基糖基-3-O-Beta-D-吡喃葡萄糖基 - β-D-吡喃吡喃糖基）氧化物] Ent-Kaur-16-ZEN-19-OIC酸β-D-吡喃葡萄糖酯（也称为RQ3，其天然存在于甜叶菊提取物作为莱鲍迪甙D的异构体。该研究可以有助于进一步了解在分子连杆模式的方面中通过托唑糖苷3.0L辅助桂色糖苷的葡萄糖苷化反应机理，并且还有助于葡萄糖基化的rebaudiosides施用。

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来源
《Journal of Agricultural and Food Chemistry》 |2019年第28期|共9页
作者
Guo Qingbin; Zhang Tongtong; Wang Nifei; Xia Yongmei; Zhou Zhuoyu; Wang Jian-rong; Mei Xuefeng;
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作者单位

Jiangnan Univ State Key Lab Food Sci &

Technol Wuxi 214122 Jiangsu Peoples R China;

Jiangnan Univ State Key Lab Food Sci &

Technol Wuxi 214122 Jiangsu Peoples R China;

Tianjin Univ Sci &

Technol State Key Lab Food Nutr &

Safety Minist Educ Tianjin 300457 Peoples R China;

Jiangnan Univ State Key Lab Food Sci &

Technol Wuxi 214122 Jiangsu Peoples R China;

Jiangnan Univ State Key Lab Food Sci &

Technol Wuxi 214122 Jiangsu Peoples R China;

Chinese Acad Sci Shanghai Inst Mat Med Pharmaceut Analyt &

Solid State Chem Res Ctr Shanghai 201203 Peoples R China;

Chinese Acad Sci Shanghai Inst Mat Med Pharmaceut Analyt &

Solid State Chem Res Ctr Shanghai 201203 Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类营养卫生、食品卫生;农业科学;
关键词
rebaudioside; steviol glycoside; glycosylation; transglucosylation; NMR;

机译：莱鲍迪甙;甜菊糖糖苷;糖基化;转胶;NMR;

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专利

1. RQ3, A Natural Rebaudioside D Isomer, Was Obtained from Glucosylation of Rebaudioside A Catalyzed by the CGTase Toruzyme 3.0 L [J] . Guo Qingbin, Zhang Tongtong, Wang Nifei, Journal of Agricultural and Food Chemistry . 2019,第28期

机译：RQ3是一种天然莱鲍迪甙D异构体，从CGTase Toruzyme 3.0 L催化的Rebaudioside A催化的葡萄糖苷化获得
2. Rebaudioside A and other unreported steviol glycoside isomers found in the sweet tea (Rubus suavissimis) leaf (vol 28, pg 93, 2018) [J] . Uhler Brandon, Yang Zheng Phytochemistry Letters . 2019,第期

机译：Rebaudioside A和其他未报告的甜蜜糖苷异构体在甜茶（葡萄酒素泥）叶（卷葡萄酒素）叶（Vol 28，PG 93,2018）中发现
3. Endocyclic double bond isomers and by-products from rebaudioside A and stevioside formed under acid conditions [J] . Perera Wilmer H., Docampo Maite L., Wiggers Frank T., Phytochemistry Letters . 2018,第期

机译：来自酸条件下形成的Rebaudioside A和甜菊糖苷的环循环双键异构体和副产品
4. Isolation and Characterization of a Novel Rebaudioside M Isomer from a Bioconversion Reaction of Rebaudioside A and NMR Comparison Studies of Rebaudioside M Isolated from Stevia rebaudiana Bertoni and Stevia rebaudiana Morita [O] . Indra Prakash, Cynthia Bunders, Krishna P. Devkota, 2014

机译：从莱鲍迪甙A的生物转化反应分离和表征新型莱鲍迪甙M异构体和NMR比较甜叶菊甜叶菊和甜叶菊甜叶菊甙M的莱鲍迪甙M
5. Isolation and Characterization of a Novel Rebaudioside M Isomer from a Bioconversion Reaction of Rebaudioside A and NMR Comparison Studies of Rebaudioside M Isolated from Stevia rebaudiana Bertoni and Stevia rebaudiana Morita [O] . Indra Prakash, Cynthia Bunders, Krishna P. Devkota, 2014

机译：从莱鲍迪甙a的生物转化反应中分离和表征新的莱鲍迪甙m异构体和从甜叶菊（stevia rebaudiana Bertoni）和甜叶菊（stevia rebaudiana morita）分离的莱鲍迪甙m的核磁共振比较研究

RQ3, A Natural Rebaudioside D Isomer, Was Obtained from Glucosylation of Rebaudioside A Catalyzed by the CGTase Toruzyme 3.0 L

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