نتایج جستجو برای: arbutin

تعداد نتایج: 341  

2010
M. Matsumoto M. Matsuura

In this paper, we examined the availability of raw woods as glycolic materials. It was found that some wood materials such as bamboo, larch and cherry could degrade glucose. Glucose is degraded to carbon dioxide via an unknown acidic compound. We then examined whether these wood materials could degrade various sugars. Larch, bamboo and cherry show high degradation rates for glucose, galactose, ...

2012
RAJANI CHAUHAN JAYA DWIVEDI

Secondary metabolites are chemical found in plants. These have no role in plant growth but these are important for human because it have many pharmacological activity. Bergenia species such as Bergenia stracheyi, Bergenia ligulata And Bergenia ligulata etc. have many secondary metabolites such as 1. Bergenin 2. Tannic acid 3. Gallic acid 4. Stigmesterol 5. β-Sitosterol 6. catechin 7. (+)-Afzele...

Journal: :Journal of natural products 2016
Robert W Deering Jianwei Chen Jiadong Sun Hang Ma Javier Dubert Juan L Barja Navindra P Seeram Hong Wang David C Rowley

Thalassotalic acids A-C and thalassotalamides A and B are new N-acyl dehydrotyrosine derivatives produced by Thalassotalea sp. PP2-459, a Gram-negative bacterium isolated from a marine bivalve aquaculture facility. The structures were elucidated via a combination of spectroscopic analyses emphasizing two-dimensional NMR and high-resolution mass spectrometric data. Thalassotalic acid A (1) displ...

2017
Byung Hee Chun Se Hee Lee Hye Hee Jeon Dong-Woon Kim Che Ok Jeon

The genome of Leuconostoc suionicum DSM 20241T (=ATCC 9135T = LMG 8159T = NCIMB 6992T) was completely sequenced and its fermentative metabolic pathways were reconstructed to investigate the fermentative properties and metabolites of strain DSM 20241T during fermentation. The genome of L. suionicum DSM 20241T consists of a circular chromosome (2026.8 Kb) and a circular plasmid (21.9 Kb) with 37....

Journal: :Molecules 2017
Yoshiaki Manse Kiyofumi Ninomiya Ryosuke Nishi Yoshinori Hashimoto Saowanee Chaipech Osamu Muraoka Toshio Morikawa

In our continuing study of biologically active natural products from the fruit of Alpinia galanga (Zingiberaceae), we newly isolated three new labdane-type diterpenes, termed galangalditerpenes A-C (1-3), along with four known sesquiterpenes (4-7) and two diterpenes (8 and 9). The stereostructures of 1-3 were elucidated on the basis of their spectroscopic properties. The melanogenesis inhibitor...

Journal: :Molecules 2014
Takashi Kikuchi Shinsuke Ueda Jokaku Kanazawa Hiroki Naoe Takeshi Yamada Reiko Tanaka

Three new multiflorane-type triterpene esters, i.e. 7α-hydroxymultiflor-8-ene-3α,29-diol 3-acetate-29-benzoate (1), 7α-methoxymultiflor-8-ene-3α,29-diol 3,29-dibenzoate (2), and 7β-methoxymultiflor-8-ene-3α,29-diol 3,29-dibenzoate (3), were isolated from seeds of Cucurbita maxima, along with the known compound, multiflora-7,9(11)-diene-3α,29-diol 3,29-dibenzoate (4). Compound 1 exhibited melano...

Journal: :The Yale Journal of Biology and Medicine 1983
R. E. McCoy

The plant surface and insect-inhabiting spiroplasmas of group IV, unlike other spiroplasmas, have not been demonstrated to utilize arginine. They require cholesterol for growth, produce spots and films on some media, and do not hydrolize arbutin. Electrophoretic and serological comparisons of strains from North America and Europe indicate the existence of strain differences within group IV. Thi...

Journal: :Skin therapy letter 2004
R M Halder G M Richards

Disorders of hyperpigmentation are difficult to treat, particularly in dark-skinned individuals. The goal is to reduce the hyperpigmentation without causing undesirable hypopigmentation or irritation in the surrounding normally pigmented skin. The psychosocial impact caused by these disorders must be considered. Although there are many effective therapeutic modalities available, there are poten...

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