共查询到20条相似文献,搜索用时 31 毫秒
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The sebaceous gland is an androgen-dependent structure and a major site for androgen metabolism. Androgens are involved in stimulation of sebaceous secretion in humans. The object of this study is to contribute to the understanding of the role of these hormones and their metabolites in seborrhea and to comment on the activity of certain inhibitors. Methods used are sebaceous secretion and 14C-lipogenesis in animals, 14C-testosterone or DHA metabolism in animal and human skin. Our results showed that: – by subcutaneous administration in rats, there was a relative specificity of weak androgens for sebaceous gland stimulation unlike potent androgens. 相似文献
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Yogesh P. Gadekar Anne S. R. Anjaneyulu Rajendran Thomas Sanjod Kr. Mendiratta & Napa Kondaiah 《International Journal of Food Science & Technology》2009,44(9):1763-1769
Chicken soup was made from the broth collected after the pressure cooking of deboned chicken frames (bones). The quality of stored chicken soup (S1) was compared with the soup prepared from the stored chicken broth (S2) at refrigerated (4 ± 1 °C) and frozen (−18 ± 1 °C) storage up to 12 and 90 days, respectively. Thiobarbituric acid reactive substances values and microbial counts were significantly ( P < 0.01) higher in stored soup (S1) compared with fresh soup (S2). Psychrotrophs and coliforms were not detected. Appearance and odour scores of broth were satisfactory throughout the storage. Sensory attributes were rated better for fresh soup (S2) made from stored broth than stored soup (S1) but all the attributes were decreased with increasing storage period. The stored soup was acceptable up to 9 and 90 days in refrigeration and frozen storage respectively, while the soup made from refrigerated stored broth was acceptable for 12 days. 相似文献
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Ch. LAFFORGUE F. CROUTE J.F. NICOLAS D.J. HARTMANN E. DELAPORTE J. COTTE M.C. MARTINI 《International journal of cosmetic science》1991,13(3):125-136
Antielastase activity of derivatives like 'propionylaminoacid'(C3 prolin, C3 hydroxyprolin, C3 collagen) was examined for pancreatic elastase, and fibroblastic elastase production. Essential metabolic variations of normal dermal fibroblasts were evaluated: adhesion, proliferation capacity, total protein biosynthesis and collagen type I and type III production. Possible other factors such as cellular nutrients were examined by oxygen consumption evaluation.
Propionylaminoacid derivatives have antielastase activities. Pancreatic elastase showed dose related inhibition (20% to 50% inhibition for concentration from 5 to 80 mg ml−1 .
Moreover, fibroblastic elastase production was inhibited, cellular respiration was enhanced. A very good tolerance in vitro was observed for concentration 0–1 mg ml−1 range: adhesion, proliferation capacity and collagen (type I and type III) production were not altered, and oxygen consumption was enhanced. 相似文献
Propionylaminoacid derivatives have antielastase activities. Pancreatic elastase showed dose related inhibition (20% to 50% inhibition for concentration from 5 to 80 mg ml
Moreover, fibroblastic elastase production was inhibited, cellular respiration was enhanced. A very good tolerance in vitro was observed for concentration 0–1 mg ml
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The volatile composition of the essential oil from fresh gamguk (Chrysanthemum indicum) flowers was investigated. The volatile constituents were extracted by the hydro distillation method. Volatile compositional
changes of gamguk prepared via different drying methods (shade- and freeze-drying methods) were also determined. Total 36, 63, and 55 volatiles
constituents were confirmed in the essential oil from fresh and shade-, and freeze-dried flowers. Ketones were predominant
in the volatiles of gamguk flowers (%): fresh, 43.8; shade dried, 30.3; and freeze dried, 36.1. Camphor was the most abundant volatile component in
all samples, and the content of borneol was also remarkable. The content of camphor was higher in fresh sample than those
of dried samples while borneol concentration was significantly increased in the dried samples. 相似文献
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Kang Min Kim Tae Sung Jung Seon Ok Chan Young Ko Jae Seon Kang 《Food science and biotechnology》2011,20(4):1155-1159
The identification and characterization of Bacillus mojavensis KJS-3 was performed by in vitro tests. A 16S rDNA sequence and phylogenetic tree demonstrated that this isolate belongs to the B. mojavensis group. B. mojavensis KJS-3 supplies nutrients by synthesizing several vitamins. B. mojavensis KJS-3 produces α-amylase and protease. B. mojavensis KJS-3 is cultured well under aerobic conditions without gas production. B. mojavensis KJS-3 allows for assimilation of cholesterol and bile salt hydrolase activity. Finally, adhesion experiments using Caco-2
cells revealed that the adherence of B. mojavensis KJS-3 to Caco-2 cells was approximately 51.2±8.14%. 相似文献
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Christopher M C Yuen Nyoman O Tridjaja Ronald B H Wills Brian L Wild 《Journal of the science of food and agriculture》1995,67(3):335-339
The effect of varying levels of ethylene on the chilling injury (CI) development and the changes in the levels of putrescine, squalene and α-farnesene of ‘Tahitian’ lime (Citrus latifolia Tanaka), ‘Emperor’ mandarin (Citrus reticulata Blanco), ‘Marsh’ grapefruit (Citrus paradisi Macf) and ‘Valencia’ orange (Citrus sinensis L Osbeck) stored at 0°C was investigated. It was found that different citrus fruits stored at 0°C had varying sensitivity to CI, and that low levels of exogenous ethyiene induced earlier and more severe CI in all citrus fiuits. The levels of endogenous putrescine, squalene and α-farnesene varied between fruit, and was affected by the time of exposure at 0°C and the presence of ethylene. The patterns of change indicate that loss of squalene coupled with loss of α-farnesene could be involved in induction of CI. 相似文献
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B. Mí
a 《Starch - St?rke》1984,36(12):425-428
Effect of Organic Fertilizers on Size of Starch Granules of Potatoes . The influence of cattle faecal matter combined with mineral fertilizers on tuber crop, dry substance content, yield and content of starch, and starch quality of potatoes was studied. From technological point of view for production of starch potatoes with high tuber yield and responding starch content all variations consisting of cattle faecal matter with addition of N, P, K proved to be favourable. The best combination was that of straw and cattle faecal matter with added N, P, K-fertilizers. Problems concerning the selection of the most favourable variation are discussed. 相似文献
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Ewa Nebesny Dorota Żyżelewicz Ilona Motyl Zdzisława Libudzisz 《European Food Research and Technology》2007,225(1):33-42
Dark chocolate masses and chocolates were supplemented with viable cells of two bacterial strains Lactobacillus caseii and Lactobacillus paracasei with potential probiotic properties, which were lyophilized in milk. Total number of live bacteria in the lyophilizate was
7.9×109 cfu/g. Sucrose or isomalt and aspartame were used as bulking substances and sweeteners. Sensory attributes of these chocolates
were not different from that of traditional chocolates. Calorie value of sucrose-free chocolate was lower by approximately
11.1–14.6% (dependent on their formulation) relative to chocolate sweetened with sucrose. Chocolate, which contains isomalt
and aspartame can be consumed by diabetics. Numbers of live L. casei and L. paracasei cells in the examined batches of chocolate were very high and approached 106–107 cfu/g after 12 months of keeping at 4 and 18 °C. Neither the texture nor the total and volatile acidity of chocolate masses
were changed by addition of the lyophilized preparation of Lactobacillus cells. Casson yield values of dark sucrose-free chocolate masses supplemented with this lyophilizate were decreased by approximately
3–55% (dependently on fat contents in these masses) as compared to that of analogous chocolate masses sweetened with sucrose. 相似文献
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Nabaweya A. Ibrahim Souad El-Gengaihi H. Motawe S. A. Riad 《European Food Research and Technology》2007,224(4):483-488
Five labdane diterpenoids, austroinulin, iso-austroinulin, sterebin E, sterebin E acetate, and sterebin A acetate, along with hydrocarbons, aliphatic alcohols, β-amyrin,
β-sitosterol and stigmasterol were isolated from the chloroform soluble fraction of the methanol extract of Stevia rebaudiana leaves. Chlorogenic and caffeic acids were isolated from the EtOAc fraction. All the isolated compounds were identified using
spectral tools. The chloroform and methanol extracts proved significant anti-inflammatory effect and caused marked inhibition
of carrageenan-induced paw oedema in rats. 相似文献
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This study aimed to evaluate the oils of soybean (S), papaya (Pa) and melon (Me) seeds and compounds oils SPa (80:20 w/w); SMe (80:20 w/w); and SPaMe (60:20:20 w/w/w) subjected to thermoxidation. Compound oils showed lower percentages of free fatty acids in relation to others, after 20 h. With the heating process, there was an increase in the quantity of saturated and monounsaturated acids. The quantity of carotenoids decreased, except in papaya seed oil that presented significant amount of carotenoids in 20 h. In relation the tocopherols, highlighted the presence of γ-tocopherol, except in the papaya oil. In 20 h, SMe and SPa still showed high amounts of tocopherols, with 76 and 85% of retention, respectively. With the thermoxidation, the amounts of phytosterols decreased. A great potential can be verified for the use of papaya and melon seed oils, in order to increase the oxidative stability of the soybean oil. 相似文献
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JOCELYNE FAVET WILLIAM GRIFFITHS GÜNTHER HOLZNER PAUL-A. AMACKER ELISABETH SCHORER 《International journal of cosmetic science》1987,9(2):59-72
Dans le but de trouver une alternative à I'emploi des parabènes, on étudie, I'efficacité antimicrobienne de I'association Kathon® CG—Germall® II (0.1%-0.1%) dans des crèmes hydrophiles.
On observe une addition, voire une synergie entre les deux conservateurs à I'égard de Pseudomonas aeruginosa, Escherichia coli et Aspergillus niger . Pour Candida albicans , I'effet du Kathon® CG est dominant. Avec Staphylococcus aureus , il n'y a pas de synergie et le temps nécessaire pour éliminer 106 UFC g−1 de crème excède souvent 48 h dans les préparations testées.
Lorsqu'on augmente la concentration de Germall® II à 0.3%, I'efficacité antimicrobienne est nettement renforcée.
Une réserve est faite cependant, compte tenu des craintes émises récemment à propos d'une augmentation du pouvoir allergène du Kathon® CG. On attend les résultats des tests épicutanés entrepris actuellement en Suisse.
Study of the interaction of Kathon® CG—Germall® II in hydrophilic creams 相似文献
On observe une addition, voire une synergie entre les deux conservateurs à I'égard de Pseudomonas aeruginosa, Escherichia coli et Aspergillus niger . Pour Candida albicans , I'effet du Kathon® CG est dominant. Avec Staphylococcus aureus , il n'y a pas de synergie et le temps nécessaire pour éliminer 10
Lorsqu'on augmente la concentration de Germall® II à 0.3%, I'efficacité antimicrobienne est nettement renforcée.
Une réserve est faite cependant, compte tenu des craintes émises récemment à propos d'une augmentation du pouvoir allergène du Kathon® CG. On attend les résultats des tests épicutanés entrepris actuellement en Suisse.
Study of the interaction of Kathon® CG—Germall® II in hydrophilic creams 相似文献