Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 26 for “"Triterpenoid"”.
-
Characterizing the role of ATP-binding cassette transporters in triterpenoid wax bloom production
… wax bloom composed primarily of polycyclic triterpenoid compounds. Relative to aliphatic compounds, next to nothing is known about the production of triterpenoid wax blooms, including whether their transport to the plant surface is mediated by ABC transporters with specificity for …
-
Investigation of glycosyltransferases from oat
… for glycosylation of avenacin, an antimicrobial triterpenoid glycoside that protects oat against fungi infection. In chapter 4, the sugar donor specificity of the recombinant UGTs and their activity towards different triterpenoid acceptors was investigated. In chapter 5, a transient expression …
-
Isolation and Structure Elucidation of Antiproliferative Agents From Madagascar Rainforests
… led to the isolation of one new and one known triterpenoid. The known triterpenoid was identified as 7β-hydroxy-23-deoxojessic acid and its structure was confirmed by comparison of its 1D and 2D NMR data to that found in literature.
-
Pengaruh ekstrak daun pegagan (Centella asiatica (L.) urban) terhadap kadar antioksidan Superoksida Dismutase (SOD) dan Glutation Superoksida Hidroksil (GSH) pada ovarium mencit (Mus musculus)
INDONESIA: Pegagan mengandung senyawa triterpenoid saponin, triterpenoid genin, flavonoid, alkaloid dan asam asiatik yang dapat dijadikan bahan antifertilitas. Pegagan dapat menurunkan jumlah folikel pada pemberian dosis tinggi sedangkan pada dosis rendah dapat meningkatkan jumlah folikel ovarium. …
-
Pengaruh ektrak daun pegagan (Centella asiatica) terhadap spermatogenesis mencit (Mus musculus)
… otak. Pada bagian daunnya, terdapat zat aktif triterpenoid glikosida yang mempunyai fungsi antistress, antiinflamasi dan diduga sebagai antifertilitas bagi pria. Hal inilah yang mendorong peneliti untuk mengetahui pengaruh ekstrak daun pegagan terhadap spermatogenesis mencit (Mus musculus). …
-
Isolation and Partial Characterization of the Toxic Substance from EREMOCARPUS SETIGERUS BENTH
… that the toxic substance might belong to the triterpenoid series.</p>
-
Potensi ekstrak daun pegagan (Centella asiatica (L.) Urban ) dosis tinggi sebagai antifertilitas pada mencit (Mus musculus) betina
… Pegagan mengandung sejumlah bahan aktif golongan triterpenoid yang merupakan fitosteroid dan diduga mampu mempengaruhi organ-organ reproduksi betina, termasuk perkembangan folikel ovarium. Bahan aktif tersebut dapat memperbaiki sel-sel granulosa ovarium yang dapat menghasilkan inhibidin dan mampu …
-
Defining the role of cellulose synthase-like M genes in the plant cell wall
… adds a glucuronic acid to the C-3 position of triterpenoid aglycones during saponin biosynthesis in plants. However, this has not yet been investigated for tomato (Solanum lycopersicum) saponins, which are steroidal glycoalkaloids (SGA). The work in this thesis has delved more into the role of …
-
Synthesis of Limonoid and Steroidal intermediates
… starting material for the synthesis of numerous triterpenoids. Prepared from (+)-endo-3-bromocamphor (2) in a four-step sequence, 4 has been converted into two advanced triterpenoid intermediates. In an eleven-step sequence 4 was transformed into the bicyclic intermediate (42) that could be used …
-
Pengaruh pemberian buah pare (Momordica charantia L.) terhadap proses spermatogenesis mencit (Mus musculus)
… cucurbitacin termasuk golongan glikosida triterpenoid. Adanya kandungan cucurbitacin ini diduga dapat menurunkan jumlah sel-sel spermatogenik dalam tubulus seminiferus testis mencit (Mus musculus) Penelitian ini merupakan penelitian eksperimental menggunakan Rancangan Acak Langkap(RAL) …
-
The role of terpenes as protectors of the potato crop
… its presence to nematodes. A heptacyclic triterpenoid, Solanoeclepin A, is released by potato roots into the soil. Nematodes sense this compound and infect the host. Possible solutions to mediate the problem require an understanding of the biosynthesis of Solanoeclepin A. Candidate …
-
Effect of CDDO-me on Myelopoiesis in Naive Mice and Mice Undergoing Bone Marrow Transplantation (BMT)
… to examine the toxicity effect of the synthetic triterpenoid CDDO-me in vivo, to investigate the effect of CDDO-me on myeloid expansion and mobilization, to determine the hematopoietic growth factor production in the serum of mice that received CDDO-me, and to look at the effect of CDDO-me on …
-
The application of nuclear magnetic resonance in the structural elucidation of natural products
… alkaloids delphinine and aconitine and the triterpenoid derivatives of cucurbitaceae. One dimensional NMR spectroscopy viz 1H, 13C and Distortionless Enhancement by Polarisation Transfer (DEPT) spectroscopy was initially applied to obtain a level of indication of the complexity of the …
-
The use of metabolomics tools to assess the therapeutic natural products of honey and propolis from Malaysia and New Zealand
… New Zealand propolis, which consisted mainly of triterpenoid and flavonoid derivatives, respectively. Several compounds revealed anticancer properties on several cancer cell lines (lung, breast and ovary), as well as phenotypic alteration on zebrafish embryo that can be related with activation of …
-
Characterisation of the in vitro effects of Asiatic acid in Glioblastoma
… energy metabolism. Asiatic acid, a pentacyclic triterpenoid extracted from Centella asiatica, has shown cytotoxicity against many cancer cell lines. To determine its anti-cancer effects under hypoxia, we investigated the effects of asiatic acid on U87-MG cell line, a grade IV glioblastoma cell …
-
Ginsenosides, Glycosidases and the Ginseng-Pythium Interaction
Ginsenosides, the triterpenoid saponins produced by American ginseng (Panax quinquefolius L.), have been extensively studied for their medicinal value, however, their function in the rhizosphere remains largely unknown. Like other saponins, ginsenosides possess mild fungitoxic activity toward some …
-
Composition of cuticular wax on the leaves of kalanchoe daigremontiana
… authentic standards led to the identification of triterpenoids including glutinol, friedelin, germanicol, epifriedelanol, glutinol acetate and β-amyrin as well as very long chain fatty acid (VLCFA) derivatives including alkanes, primary alcohols, aldehydes, fatty acids, and alkyl esters. Cuticular …
-
URSOLIC ACID INHIBITED PROLIFERATION AND INVASION OF MDA-MB-231 HUMAN BREAST CANCER CELLS VIA REGULATING CELLULAR SIGNAL TRANSDUCTION PATHWAYS
… Ursolic acid (UA), a widely-distributed triterpenoid in fruits, vegetables, herbs, and spices, has been reported to have anti-cancer activities. However, its mechanism of actions against breast cancer remain unclear. The hypothesis of this study is that UA inhibits proliferation and …
Page 1 of 2