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关键词:'178519'
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A Böker et al.
Biotechnology progress, 17(3), 568-572 (2001-06-02)
The basidiomycete Nidula niveo-tomentosa produced 4-(4-hydroxyphenyl)-butan-2-one (raspberry ketone), one of the character impact components of raspberry flavor, and its corresponding alcohol. A systematic attempt was made to improve the productivity of this fungus. Variation of nutrient medium composition, precursor amount
Jules Beekwilder et al.
Biotechnology journal, 2(10), 1270-1279 (2007-08-28)
Raspberry ketone is an important compound for the flavour industry. It is frequently used in products such as soft drinks, sweets, puddings and ice creams. The compound can be produced by organic synthesis. Demand for "natural" raspberry ketone is growing
G Fronza et al.
Journal of agricultural and food chemistry, 47(3), 1150-1155 (1999-12-20)
The natural abundance (2)H NMR characterization of raspberry ketone 1 extracted from himalayan Taxus baccata and of the accompanying (R) carbinol 2 is performed and compared with that of samples of 1 obtained from 2 by oxidation with Candida boidinii
Ki Hyun Kim et al.
Bioorganic & medicinal chemistry letters, 21(7), 2075-2078 (2011-03-01)
The rhizome of Dioscorea japonica is a food and medicinal source known as 'San Yak' in Korea. Two new furostanol saponins, coreajaponins A (1) and B (2), together with 10 known compounds (3-12) were isolated from the rhizomes of D.
Jian Su et al.
Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials, 36(8), 1267-1270 (2014-02-25)
To study the chemical constituents in the needles of Taxus cuspidata collected from Japan. Chemical constituents were isolated by column chromatography, TLC and preparative HPLC. The structures were identified on the basis of NMR spectral analysis. Six non-taxoids were isolated
Kyoung Sik Park
Planta medica, 76(15), 1654-1658 (2010-04-29)
Raspberry ketone (RK) is a natural phenolic compound of the red raspberry. The dietary administration of RK to male mice has been reported to prevent high-fat diet-induced elevation in body weight and to increase lipolysis in white adipocytes. To elucidate
Shosuke Ito et al.
Journal of dermatological science, 80(1), 18-24 (2015-08-01)
Tyrosinase is able to oxidize a great number of phenols and catechols to form ortho-quinones. Ortho-quinones are highly reactive compounds that exert cytotoxicity through binding with thiol enzymes and the production of reactive oxygen species. Certain phenolic (and catecholic) compounds
Christoph Wiedmer et al.
Analytical and bioanalytical chemistry, 409(16), 3905-3916 (2017-04-13)
Based on the observation of intense and offensive smells in the product group of aquatic toys, four representative products were exemplarily chosen and sensorially characterized by an expert panel. Panellists reported mostly almond- and rubber-like notes for three of the
S Pedapudi et al.
Biotechnology progress, 16(3), 346-349 (2000-06-03)
Production levels of p-coumaric acid (p-CA), p-hydroxyphenylbut-3-ene-2-one (benzalacetone), and p-hydroxyphenyl-2-butanone (raspberry ketone) were measured in raspberry cell suspension cultures to investigate metabolite dynamics in a short (two-step) pathway. Intracellular concentrations of benzalacetone and the raspberry ketone fluctuated during the time
Yoshihisa Ogawa et al.
Bioorganic & medicinal chemistry letters, 20(7), 2111-2114 (2010-03-17)
The effect of essential oils, such as raspberry ketone, on androgen (AR) receptor was investigated using a MDA-kb2 human breast cancer cell line for predicting potential AR activity. Among them, eugenol had the highest AR antagonistic activity with its IC(50)
H Zorn et al.
Applied and environmental microbiology, 69(1), 367-372 (2003-01-07)
Submerged cells of the basidiomycete Nidula niveo-tomentosa, a microbial producer of 4-(4-hydroxyphenyl)-butan-2-one, were supplemented with (13)C-labeled L-phenylalanines and with [1-(13)C]glucose. Labeled transformation products were detected by a novel method of analyzing stable isotope-labeled metabolites, gas chromatography (GC) coupled to an
Naoaki Harada et al.
Growth hormone & IGF research : official journal of the Growth Hormone Research Society and the International IGF Research Society, 18(4), 335-344 (2008-03-07)
Sensory neurons release calcitonin gene-related peptide (CGRP) on activation. We recently reported that topical application of capsaicin increases facial skin elasticity and promotes hair growth by increasing dermal insulin-like growth factor-I (IGF-I) production through activation of sensory neurons in mice
Roger I Vargas et al.
Vitamins and hormones, 83, 575-595 (2010-09-14)
Worldwide, an important aspect of invasive insect pest management is more effective, safer detection and control systems. Phenyl propanoids are attractive to numerous species of Dacinae fruit flies. Methyl eugenol (ME) (4-allyl-1, 2-dimethoxybenzene-carboxylate), cue-lure (C-L) (4-(p-acetoxyphenyl)-2-butanone), and raspberry ketone (RK)
A Schmerder et al.
Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas, 38(8), 1279-1283 (2005-08-06)
Little is known about the barrier properties of polymer films during high pressure processing of prepackaged foods. In order to learn more about this, we examined the influence of high hydrostatic pressure on the permeation of raspberry ketone (dissolved in
G Feron et al.
Letters in applied microbiology, 45(1), 29-35 (2007-06-28)
To investigate the enzymatic aldol reaction between acetone as a donor and 4-hydroxybenzaldehyde as a receptor to generate 4-(4-hydroxyphenyl)-but-3-ene-2-one or 4-hydroxybenzylidene acetone, the direct precursor of 4-(4-hydroxyphenyl)-butan-2-one or raspberry ketone, using different species of filamentous fungi and bacteria. Different classes
Kei Shimoda et al.
Phytochemistry, 68(4), 487-492 (2007-01-09)
The biotransformation of raspberry ketone and zingerone were individually investigated using cultured cells of Phytolacca americana. In addition to (2S)-4-(4-hydroxyphenyl)-2-butanol (2%), (2S)-4-(3,4-dihydroxyphenyl)-2-butanol (5%), 4-[4-(beta-d-glucopyranosyloxy)phenyl]-2-butanone (19%), 4-[(3S)-3-hydroxybutyl]phenyl-beta-d-glucopyranoside (23%), and (2S)-4-(4-hydroxyphenyl)but-2-yl-beta-d-glucopyranoside (20%), two biotransformation products, i.e., 2-hydroxy-4-[(3S)-3-hydroxybutyl]phenyl-beta-d-glucopyranoside (12%) and 2-hydroxy-5-[(3S)-3-hydroxybutyl]phenyl-beta-d-glucopyranoside (11%), were
Tan Keng-Hong et al.
Journal of chemical ecology, 31(3), 497-507 (2005-05-19)
Bulbophyllum apertum flower (Orchidaceae) releases raspberry ketone (RK) in its fragrance, which attracts males of several fruit fly species belonging to the genus Bactrocera. Besides RK as a major component, the flower contains smaller amounts of 4-(4-hydroxylphenyl)-2-butanol, plus two minor
Danyue Zhao et al.
Molecular nutrition & food research, 64(8), e1900907-e1900907 (2020-02-14)
Raspberry ketone (RK) is the primary aroma compound in red raspberries and a dietary supplement for weight loss. This work aims to 1) compare RK bioavailability in male versus female, normal-weight versus obese mice; 2) characterize RK metabolic pathways. Study
Alapati Kavitha et al.
Research in microbiology, 161(5), 335-345 (2010-04-21)
An Actinobacterium strain isolated from laterite soils of the Guntur region was identified as Streptomyces sp. TK-VL_333 by 16S rRNA analysis. Cultural, morphological and physiological characteristics of the strain were recorded. The secondary metabolites produced by the strain cultured on
S Sporstøl et al.
Xenobiotica; the fate of foreign compounds in biological systems, 12(4), 249-257 (1982-04-01)
1. The metabolism of 4-(4-hydroxyphenyl)butan-2-one(raspberry ketone) was studied in rats, guinea-pigs and rabbits. 2. Following intragastric dosage (1 mmol/kg) urinary metabolite excretion was nearly complete within 24 h, amounting to roughly 90% of the dose in all species. 3. The
Tomoyo Takata et al.
Journal of medicinal food, 17(3), 332-338 (2014-01-11)
The decrease in the bone mass associated with osteoporosis caused by ovariectomy, aging, and other conditions is accompanied by an increase in bone marrow adipose tissue. The balance between osteoblasts and adipocytes is influenced by a reciprocal relationship. The development
Chie Morimoto et al.
Life sciences, 77(2), 194-204 (2005-05-03)
Raspberry ketone (4-(4-hydroxyphenyl) butan-2-one; RK) is a major aromatic compound of red raspberry (Rubus idaeus). The structure of RK is similar to the structures of capsaicin and synephrine, compounds known to exert anti-obese actions and alter the lipid metabolism. The
G Hrazdina
Journal of agricultural and food chemistry, 54(4), 1116-1123 (2006-02-16)
Although plant tissue cultures have been in use for the past hundred years, adapting them for the production of aroma compounds started only in the 1970s. The use of tissue cultures in aroma production has its advantages, because plant cells
S P Crispim et al.
Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 27(4), 433-446 (2010-01-16)
This study aimed to compare different methods of assessing dietary exposure to flavourings in the context of a stepwise approach. The dietary exposure to four flavourings--raspberry ketone, glycyrrhizinic acid, coumarin, and caffeine--was determined. When dietary exposure exceeded the safety limits
Meyliana Wulandari et al.
Analytical and bioanalytical chemistry, 407(3), 803-812 (2014-07-25)
This paper describes the synthesis of novel molecularly imprinted polymers (MIPs), prepared by a noncovalent imprinting approach, for cleanup and preconcentration of curcumin (CUR) and bisdemethoxycurcumin (BDMC) from medicinal herbal extracts and further analysis by high-performance liquid chromatography with fluorescence
Sunil K Chattopadhyay et al.
Bioorganic & medicinal chemistry letters, 14(7), 1729-1731 (2004-03-18)
The title chiral amine, 3-(4-methoxyphenyl)-1-methylpropylamine 5 has been synthesized from naturally abundant betuligenol 1 in three steps and also in good yield. Furthermore, the versatile intermediate 3 could be manipulated for the preparation of chiral disulphide 7. The amine derivative
Daniela E Taupp et al.
Mycologia, 100(4), 529-538 (2008-10-07)
Exposition to UV-A light stimulated the growth and synthesis of raspberry ketone in submerged cultures of the basidiomycete Nidula niveotomentosa. To investigate the fungus' response to UV-A light differentially expressed proteins were identified by means of 2D-electrophoresis. Light induced proteins
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Tony Peregrin
Journal of the Academy of Nutrition and Dietetics, 113(7), 887-891 (2013-05-25)
Lili Wang et al.
Journal of medicinal food, 15(5), 495-503 (2012-05-04)
The protective effect of raspberry ketone against nonalcoholic steatohepatitis (NASH) was tested by using a high-fat diet-induced NASH model, and its mechanism was explored. Forty Sprague-Dawley rats with a 1:1 male to female ratio were randomly divided into five groups:
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