Antimicrobial Effect of Extract in Combination with Gallic Acid or Octyl Gallate on Bacteria from Meat.

Chicken meat and its derivatives are easily alterable. They are a nutritionally healthy food, and their consumption has seen a remarkable increase worldwide in recent years. At the same time, consumer demand for the use of natural products to control microbial growth is increasing.

Assessment of (-) epicatechin as natural additive for improving safety and functionality in fresh "Piel de Sapo" melon juice.

Epicatechin (EC) is a very abundant flavonoid in vegetable tissues that presents high antioxidant activity in living systems. The minimum inhibitory concentration (MIC) of (-)EC was determined in three species of bacteria commonly associated with foodborne illness of plant origin: (.) , (.

Antimicrobial efficacy of natural extract against and in "Piel de Sapo" melon juice.

Background: The minimal inhibitory concentration (MIC) of an aqueous extract of with reported functional properties (PLX) was determined on two strains of () belonging to serogroups commonly associated with foodborne illnesses ( O157:H7 ATCC 700728 and O111 isolate 172) in vegetable products and two control strains for antimicrobial tests assays ( ATCC 25922 and - ATCC 29212).

Results: Mean MIC values at standard pH (7.4) in broth for the strains tested ranged from 4,444 µg/ml (35ºC) to 1,250 µg/ml (10ºC) and to 182 µg/ml (4ºC).

Combination of Carvacrol and Thymol: Antimicrobial Activity Against and Antioxidant Activity.

Plant and essential oil extracts have been used for some time as antimicrobials and antioxidants, although little is known about the interactions between the main components of these plant materials. This knowledge could help to design more potent antimicrobial and antioxidant mixtures. Carvacrol and thymol, the main components of the essential oils of the Lamiaceae family of plants, were assessed in combination to evaluate their antioxidant activity and antimicrobial effect against 19 strains of () of different origins (clinical, meat, milk, and other) and mostly (12) enterotoxin producers.

Stress in Phycomyces blakesleeanus by glucose starvation and acetate growth: response of the antioxidant system and reserve carbohydrates.

The objective of this study was to analyze the response of Phycomyces blakesleeanus to glucose starvation and acetate growth stress. At the onset of the exponential growth phase, the fungus shows a high tolerance to both stresses, being higher for the glucose starvation. In both stresses we have found higher activities of catalase and glutathione peroxidase, and a decrease of the pools of D-erythroascorbate (D-erythroascorbate+D-erythroascorbate monoglucoside) and glutathione (GSH+GSSG), while the intracellular GSH/GSSG redox balance becomes more reducing.