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Lívia Darnay,Adél Len,Ágota Koncz,László Friedrich,László Rosta 한국식품과학회 2015 Food Science and Biotechnology Vol.24 No.6
Small angle neutron scattering (SANS) studies of fermentation of bovine milk with and without microbial transglutaminase (mTG) are described. Use of mTG increased the quality of low-fat yogurt via cross-linking of milk proteins. The SANS method was suitable for simultaneous characterization of the fermentation process and the effect of mTG. A decrease of whey protein release into the supernatant of centrifuged low-fat yogurt samples showed how mTG was capable to cross-link them already after 1 h of fermentation. The applied SANS method can be used to follow the sol-gel transformation of fermented dairy products in general. Moreover it can be a special tool for detecting the activity of mTG during fermentation of low-fat yogurts.
Fla´via V. Santa-Cecı´lia,Ge´rsika B. Santos,Carolina N. Fuzissaki,Priscilla B.M.C. Derogis,Lissara A.S. Freitas,Vanessa S. Gontijo,Paulo C. Stringheta,Tanus J. Nagem,Maı´sa R.P.L. Brigaga˜o,Marcelo H 한국식품영양과학회 2012 Journal of medicinal food Vol.15 No.2
Despite defenses by polymorphonuclear neutrophils in the host against invading agents, overproduction of oxidant species by phagocytes can lead to damage in the surrounding tissues. Several benzophenones have been shown to possess anti-inflammatory properties. The effect of the natural benzophenone 7-epiclusianone isolated from leaves of Garcinia brasiliensis was investigated by using in vitro antioxidant and ex vivo anti-inflammatory assays, focusing on the neutrophil respiratory burst and on the biochemical pathways involved. The bioactive extract, 7-epiclusianone, showed low in vitro antioxidant activity as evaluated by the 2,2-diphenyl-1-picrylhydrazyl free radical scavenging assay, the reducing power test,or the chelating power assay. However, the benzophenone displayed potent activity in the ex vivo model of the neutrophil respiratory burst, inhibiting the generation of superoxide anions in a dose-dependent manner. When the respiratory burst was triggered by N-formyl-methionyl-leucyl-phenylalanine, a chemotactic peptide, the 50% effective concentration (EC50) was 41.18 lg/107 cells. When phagocytes were stimulated directly through protein kinase C via phorbol, the EC50 was 34.3 lg/106cells. The results indicated that 7-epiclusianone was able to down-regulate inflammatory phagocyte superoxide anion release through a mechanism controlled by tyrosine protein phosphorylation and by a direct stimulation of protein kinase C. These findings could lead to new therapeutic approaches for inflammation management and the development of new drugs.
Annona montana Fruit and Leaves Improve the Glycemic and Lipid Profiles of Wistar Rats
Sandra Maria Barbalho,Maricelma da Silva Soares de Souza,Patrı´cia Cincotto dos Santos Bueno,Elen Landgraf Guiguer,,Fla´via Maria Vasques Farinazzi-Machado,Adriano Cressoni Arau´jo,Carla Omete Menegui 한국식품영양과학회 2012 Journal of medicinal food Vol.15 No.10
Species of the family Annonaceae has been used traditionally as a medicinal plant in tropical regions of South and North America and in Africa. Annona montana is known popularly as false graviola and originates from tropical America and can be cultivated throughout Brazil. There are no studies in the literature that associate A. montana with the metabolic profile of animals. Therefore, the purpose of this work was to assess the effects of the consumption of pulp and leaves of this plant on the metabolic profile of Wistar rats. The animals, which were treated for 40 days, were divided into two control groups—treated with water via gavage and ad libitum, respectively, and two treated groups—one treated with leaf juice and the other with pulp juice of the fruit. Glycemia, lipids, and body weight were found to decrease and high density lipoprotein-cholesterol (HDL-c) levels to increase in the animals treated with leaf juice. The group treated with pulp juice showed a reduction in lipids and augmented HDL-c. The use of A. montana may have beneficial effects in the prevention of diabetes mellitus and dyslipidemia and may thus contribute to the prevention of cardiovascular diseases.