In soils of tropical climate regions the high acidity and the presence of exchangeable aluminum (Al), associated to low fertility, are the main restrainting factors for agricultural production. A laboratory experiment was conducted using 26 soils of different Brazilian regions, to investigate soil acidity components, giving emphasis to Al and their relations with chemical properties. The pH cor...

The meningococcus is not a "microaerophile." It grows equally well in atmospheres containing from 15 to 40 per cent oxygen. If small amounts of carbon dioxide affect the growth of the meningococcus on an artificial medium it is by changing the reaction of the medium, not by slightly reducing the oxygen tension of the surrounding air. The fallibility of titrating the total acidity of a medium is...

A study was conducted to determine the effects of packaging materials, seasonality, storage temperature and time on physiochemical and antioxidant properties of roselle-mango juice blends. Roselle extract (20%, 40%, 60%, and 80%) was mixed with mango juice and stored in glass and plastic bottles at 4°C and 28°C. Total soluble solids, pH, titratable acidity, reducing sugar, color, vitamin C, tot...

This work focuses on the persistence of the putative probiotic bacteria Lactobacillus pentosus TOMC-LAB2 on green Spanish-style Manzanilla olives according to different packaging conditions and storage temperatures. The lactic acid bacteria population decreased with time but the highest survival counts (and lowest yeasts) at the end of storage (8 months) were observed in plastic pouches under n...

Introduction: The antimicrobial compounds have attracted attention these days all around the world. Applying essential oils (EOs) as the herbal antimicrobial materials and natural antioxidant are so valuable in the food industry. In this study the effects of Rosmarinus officinalis essential oil (REO) with different phenol contents was investigated on the properties of ...

in order to evaluate the effect of different concentrations of postharvest salicylic acid and calcium chloride on shelf life, quality characteristics and antioxidant activity of peach fruit cv. amesden, an experiment was conducted as factorial based on randomized completely design with three replications. fruits were harvested at the commercial ripening stage, and fruits were immerged in differ...

Climate change has without any doubt an important impact on viticulture and oenology. The composition of wine is being altered due to lack rainfall the increase in temperatures during grape ripening period; it therefore becoming more common find wines with low titratable acidity, high ethanol content pH. pH especially problematic sparkling wines, because they need higher acidity maintain adequa...