KHẢO SÁT THÀNH PHẦN CÁC HOẠT CHẤT NHÓM IRIDOID TRONG DỊCH CHIẾT TỪ RỄ CỦ ĐỊA HOÀNG (Rehmannia glutinosa Libosch.) BẰNG UHPLC VÀ LC-MSD-Trap-SL

2021 ◽  
Vol 18 (12) ◽  
pp. 2201
Author(s):  
Nguyễn Thị Mai ◽  
Nguyễn Thị Thúy ◽  
Trần Thị Thu Hường ◽  
Ngô Duy Đông ◽  
Lê Minh Quang ◽  
...  
Keyword(s):  
Rehmannia Glutinosa ◽  
Rehmannia Glutinosa Libosch

 Dung môi đóng vai trò rất quan trọng trong việc trích li các hợp chất tự nhiên bởi dung môi ảnh hưởng lớn đến thành phần của dịch chiết. Nghiên cứu này nhằm so sánh sự khác nhau về thành phần các hoạt chất nhóm iridoid trong các dịch chiết nước và ethanol của rễ củ địa hoàng (Rehmannia glutinosa Libosch.) bằng phương pháp sắc kí lỏng hiệu năng cao (UHPLC) và sắc kí lỏng ghép khối phổ (LC-MSD-Trap-SL). Theo các số liệu của LC-MSD-Trap-SL, Jioglutoside B, Leonuride và Jioglutin E là những iridoid phân biệt sự khác nhau giữa hai dịch chiết. Trong khi đó, phân tích UHPLC cũng chứng minh rằng hàm lượng catalpol, 8-epiloganic axit và glutinoside trong dịch chiết nước cao hơn nhiều so với của dịch chiết ethanol (lớn hơn lần lượt là 126; 4,46 và 11,14 lần). Vì vậy, nghiên cứu này đề xuất sử dụng nước để chiết các hoạt chất iriodid có hoạt tính sinh học cao từ rễ củ địa hoàng, trong đó có catalpol, một iridoic glycoside nổi trội trong rễ củ địa hoàng.

scholarly journals Improvement of the Field Productivity in Rehmannia glutinosa Libosch. Crops by Application of N, P and K Fertilizers and Plant Spacing

2020 ◽  
Vol 19 (3) ◽  
pp. 214-222
Author(s):  
Thanh Loan Pham ◽  
Van Huy Nguyen ◽  
Thi Le Thu Hoang ◽  
Thi Tam Tien Ha ◽  
Chi Nghia Phan ◽  
...  
Keyword(s):  
Plant Spacing ◽  
Rehmannia Glutinosa ◽  
Rehmannia Glutinosa Libosch

scholarly journals Rehmannia glutinosa Libosch Extracts Prevent Bone Loss and Architectural Deterioration and Enhance Osteoblastic Bone Formation by Regulating the IGF-1/PI3K/mTOR Pathway in Streptozotocin-Induced Diabetic Rats

2019 ◽  
Vol 20 (16) ◽  
pp. 3964 ◽  
Author(s):  
Wan Gong ◽  
Naidan Zhang ◽  
Gang Cheng ◽  
Quanlong Zhang ◽  
Yuqiong He ◽  
...  
Keyword(s):  
Bone Loss ◽  
Bone Formation ◽  
Signaling Pathways ◽  
Bone Microarchitecture ◽  
Diabetic Rats ◽  
Mtor Pathway ◽  
Mtor Signaling ◽  
Rehmannia Glutinosa ◽  
Mineral Density ◽  
Rehmannia Glutinosa Libosch

Rehmanniae Radix Praeparata (RR, named as Shudihuang in traditional Chinese medicine), the steamed roots of Rehmannia glutinosa Libosch (Scrophulariaceae), has been demonstrated to have anti-diabetic and anti-osteoporotic activities. This study aimed to explore the protective effect and underlying mechanism of RR on diabetes-induced bone loss. It was found that RR regulated the alkaline phosphatase activity and osteocalcin level, enhanced bone mineral density, and improved the bone microarchitecture in diabetic rats. The catalpol (CAT), acteoside (ACT), and echinacoside (ECH) from RR increased the proliferation and differentiation of osteoblastic MC3T3-E1 cells injured by high glucose and promoted the production of IGF-1 and expression of related proteins in BMP and IGF-1/PI3K/mammalian target of rapamycin complex 1 (mTOR) signaling pathways. The verifying tests of inhibitors of BMP pathway (noggin) and IGF-1/PI3K/mTOR pathway (picropodophyllin) and molecular docking of IGF-1R further indicated that CAT, ACT, and ECH extracted from RR enhanced bone formation by regulating IGF-1/PI3K/mTOR signaling pathways. These findings suggest that RR may prove to be a promising candidate drug for the prevention and treatment of diabetes-induced osteoporosis.

A Comparison Study on Microwave-Assisted Extraction of Catalpol from Rehmannia glutinosa Libosch with Conventional Methods

2014 ◽  
Vol 1033-1034 ◽  
pp. 329-336
Author(s):  
Xiu Li Zhang ◽  
Chun Li Li ◽  
Xue Yin ◽  
Xin Yun Su ◽  
De Hong Yu
Keyword(s):  
Soxhlet Extraction ◽  
Ultrasonic Extraction ◽  
Microwave Assisted Extraction ◽  
Rehmannia Glutinosa ◽  
Extraction Technology ◽  
Considerable Saving ◽  
Microwave Assisted ◽  
Assisted Extraction ◽  
Percentage Extraction ◽  
Rehmannia Glutinosa Libosch

Catalpol, an iridoid glycoside, has been verified to be of neuroprotection and may be a potential agent for the treatment of neurodegenerative disease. The extraction technology of catalpol has been tested in this paper. We used different extraction methods including extraction at room temperature (ERT), heat reflux extraction, Soxhlet extraction, ultrasonic extraction and microwave-assisted extraction (MAE) to evaluat the percentage extraction of catapol fromRehmannia glutinosa Libosch.The extracts were analyzed by high performance liquid chromatography (HPLC). Methanol (100%, v/v) extracted high percentage extraction of catapol compared to ethanol (60%, v/v) which achieved the highest percentage extraction of catapol in different concentration of ethanol. The results showed that the percentage extraction of catalpol fromRehmannia glutinosa Liboschby MAE was more efficient in short time followed by ultrasonic extraction, Soxhlet extraction, heat reflux extraction and ERT methods. MAE has need of 4 min, whereas ultrasonic extraction, Soxhlet extraction, heat reflux extraction and ERT techniques require 70, 140, 180 min and 60 h respectively, to leach higher percentage extraction of catalpol. The time taken by MAE was nearly 18 times less than the ultrasonic extraction, 35 times less than Soxhlet extraction, 45 times less than heat reflux extraction and 900 times less than ERT for the highest percentage extraction of catalpol. The present results showed that the high extraction efficiency and considerable saving of time by MAE were more competent than the conventional extraction techniques.

scholarly journals Steamed root of Rehmannia glutinosa Libosch (Plantaginaceae) alleviates methotrexate-induced intestinal mucositis in rats

2016 ◽  
Vol 183 ◽  
pp. 143-150 ◽  
Author(s):  
Cheng-jin Shi ◽  
Xue-sen Wen ◽  
Hui-feng Gao ◽  
Zhi-hua Liu ◽  
Xu-kang Xu ◽  
...  
Keyword(s):  
Rehmannia Glutinosa ◽  
Intestinal Mucositis ◽  
Rehmannia Glutinosa Libosch
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