Hydrolyzable Tannins

Publication Title: 
Poultry Science

Several natural phenolic materials were analyzed for gallic acid and were further characterized for dialyzability and flavonoid content. These materials were added to a diet and fed to broiler strain chicks for 4 weeks. The depression in growth caused by these phenolic materials was compared with that of tannic acid on a gallic acid equivalency basis.

Author(s): 
Kratzer, F. H.
Singleton, V. L.
Kadirvel, R.
Rayudu, G. V.
Publication Title: 
Planta Medica

The bioassay-directed isolation of Terminalia chebula fruits afforded four human immunodeficiency virus type 1 (HIV-1) integrase inhibitors, gallic acid ( 1) and three galloyl glucoses ( 2 - 4). In addition, four flavonol glycoside gallates ( 5 - 8) from Euphorbia pekinensis containing the galloyl moiety also showed the inhibitory activity at a level comparable to those of 2 - 4.

Author(s): 
Ahn, Mi-Jeong
Kim, Chul Young
Lee, Ji Suk
Kim, Tae Gyun
Kim, Seung Hee
Lee, Chong-Kyo
Lee, Bo-Bin
Shin, Cha-Gyun
Huh, Hoon
Kim, Jinwoong
Publication Title: 
Journal of Basic Microbiology

Modified solid-state fermentation (MSSF) of tannin-rich substrates for production of tannase and gallic acid was carried out using two fungal cultures, Rhizopus oryzae (RO IIT RB-13, NRRL 21498) and Aspergillus foetidus (GMRB013 MTCC 3557). The tannin rich substrates included powdered fruits of Terminalia chebula and Caesalpinia digyna pod cover powder. The different environmental parameters for the maximum production of tannase and gallic acid were optimized through media engineering.

Author(s): 
Mukherjee, Gargi
Banerjee, Rintu
Publication Title: 
Journal of Separation Science

As a chromatographic column, the high-speed counter-current chromatography system was equipped with a preparative HPLC series, enabling the successful isolation of hydrolysable tannins from the fruits of Terminalia chebula, a traditional Chinese medicine. The two-phase solvent system was composed of n-hexane-ethyl acetate-methanol-water (1:20:1:20 v/v). As a result, 33.2 mg chebulagic and 15.8 mg chebulinic acids were obtained in one step from 300 mg of crude extract. Their purities were determined by HPLC to be 95.3 and 96.1%, respectively.

Author(s): 
Han, Quanbin
Song, Jingzheng
Qiao, Chunfeng
Wong, Lina
Xu, Hongxi
Publication Title: 
Archives of Toxicology

A hepatoprotective compound was isolated from the ethanolic extract of the fruits of Terminalia chebula Retz. by consecutive solvent partitioning, followed by silica gel and Sephadex LH-20 column chromatographies. The purified compound was identified as a mixture of chebulic acid and its minor isomer, neochebulic acid, with a ratio of 2:1 by spectroscopic analysis including 1D and 2D NMR and MS spectroscopy. To our knowledge, this is the first report on the protection of rat hepatocytes against oxidative toxicity by chebulic acid obtained from T. chebula Retz.

Author(s): 
Lee, Hyun-Sun
Jung, Sung-Hoon
Yun, Bong-Sik
Lee, Kwang-Won
Publication Title: 
Acta Poloniae Pharmaceutica

In the current era, natural products are gaining prime attention in the fields of cosmeceuticals and pharmaceuticals due to higher safety margins and biological functions, as they have a considerable amount of potential in treating different ailments. Thus, to find effective elastase and hyaluronidase inhibitors from natural resources, fifty Korean plants were screened, and the fruit of Terminalia chebula RETZIUS (Combretaceae) was selected for further structural isolation due to its potent efficacy.

Author(s): 
Kim, Song-Ja
Sancheti, Sandesh A.
Sancheti, Shruti S.
Um, Byung-Hun
Yu, Seon-Mi
Seo, Sung-Yum
Publication Title: 
Natural Product Communications

Abhayarishta is an Ayurvedic formulation prepared traditionally by the fermentation of the decoction of Terminalia chebula (pericarp), Vitis vinifera (fruits), Embelia ribes (fruits) and Madhuca indica (flowers). In the present communication, chemical changes occurring during fermentation in Abhayarishta have been studied for the purpose of its standardization. An HPLC-DAD method for quantitative estimation of selected marker constituents in the formulation has been developed and validated.

Author(s): 
Lal, Uma Ranjan
Tripathi, Shailendra Mani
Jachak, Sanjay M.
Bhutani, Kamlesh Kumar
Singh, Inder Pal
Publication Title: 
Journal of Ethnopharmacology

AIM OF THE STUDY: The aqueous extract of Terminalia chebular fruits was reported to have anti-hyperglycemia and anti-diabetic complication effects. The present study therefore investigated the protective mechanism of chebulic acid, a phenolcarboxylic acid compound isolated from the ripe fruits of Terminalia chebula against advanced glycation endproducts (AGEs)-induced endothelial cell dysfunction.

Author(s): 
Lee, Hyun-Sun
Koo, Yoon-Chang
Suh, Hyung Joo
Kim, Kyung-Yong
Lee, Kwang-Won
Publication Title: 
Natural Product Research

The aqueous extract of galls from Terminalia chebula Retz. (Combretaceae) was fractionated on Diaion and refractionated on octadecyl silica column. Six phenolic compounds were isolated and identified as gallic acid (1), punicalagin (2), isoterchebulin (3), 1,3,6-tri-O-galloyl-?-D-glucopyranose (4), chebulagic acid (5) and chebulinic acid (6). All of the compounds showed stronger 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging and melanin inhibitory activities than ascorbic acid, butylated hydroxytoluene, ?-tocopherol, arbutin and kojic acid, the reference compounds.

Author(s): 
Manosroi, Aranya
Jantrawut, Pensak
Akazawa, Hiroyuki
Akihisa, Toshihiro
Manosroi, Jiradej
Publication Title: 
Journal of Virology

Herpes simplex virus 1 (HSV-1) is a common human pathogen that causes lifelong latent infection of sensory neurons. Non-nucleoside inhibitors that can limit HSV-1 recurrence are particularly useful in treating immunocompromised individuals or cases of emerging acyclovir-resistant strains of herpesvirus. We report that chebulagic acid (CHLA) and punicalagin (PUG), two hydrolyzable tannins isolated from the dried fruits of Terminalia chebula Retz. (Combretaceae), inhibit HSV-1 entry at noncytotoxic doses in A549 human lung cells.

Author(s): 
Lin, Liang-Tzung
Chen, Ting-Ying
Chung, Chueh-Yao
Noyce, Ryan S.
Grindley, T. Bruce
McCormick, Craig
Lin, Ta-Chen
Wang, Guey-Horng
Lin, Chun-Ching
Richardson, Christopher D.

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