This study shows the potential of 1 H NMR and chemometrics for quality control of grape juices. A wide range of quality assurance parameters were accessible on a single 1 H NMR experiment obtained directly from the samples, such as high amounts of ethanol. The results demonstrated the importance of storing the grape juices under refrigeration after the bottles were opened, in order to minimize ...

The pomegranate fruit ( Punica granatum ) has become an international high-value crop for the production of commercial pomegranate juice (PJ). The perceived consumer value of PJ is due in large part to its potential health benefits based on a significant body of medical research conducted with authentic PJ. To establish criteria for authenticating PJ, a new International Multidimensional Authen...

• Bentonite fining is widely used to increase the protein stability of a wine. Some authors have proposed treatment of the juice itself, rather than the wine, to enhance fermentation performance and flavor, and increase stability. Some authors have reported that this practice yields stable wines not requiring further fining, whereas others have found no increase in stability when treating the j...

International competition within the wine market, consumer demands for newer styles of wines and increasing concerns about the environmental sustainability of wine production are providing new challenges for innovation in wine fermentation. Within the total production chain, the alcoholic fermentation of grape juice by yeasts is a key process where winemakers can creatively engineer wine charac...

Objective: Due to rich resources of phenolic components such as anthocyanin and flavonoids, grape has grabbed lots of attention. Antioxidants are the frontline of the human immune system against free radicals and they are of high importance for the human health. Methods: In order to determine antioxidant activities, the amount of phenols, anthocyanin and ascorbic acid of 2 grapes’ varieties ("w...

the popularity of non-dairy probiotic products continues to persist as the consumers prefer functional foods satisfying their health needs. among these promising foods, probiotic grape drink would have beneficial effects on modifying gastrointestinal flora and human health. in this study, the pasteurized grape drink was inoculated by three species of lactic acid bacteria (lactobacillus delbruec...

response surface methodology (rsm) was used in order to find the suitable conditions of ultrasonic treatment for achieving the maximum inactivation rate and anthocynins content during ultrasonic processing of red grape juice. temperature in 3 levels (25 - 37.5 - 50°c), time in (20 – 30 - 40 minutes) and frequency (0 - 67.5 – 135 khz) were parameters which effects were studied. experiments were ...

UNLABELLED The disruption of plant cell walls during fruit juice processing results in the enzymatic formation of herbaceous-smelling green leaf volatiles (GLVs). Our objective was to assess the impact of thermal processing conditions on resulting levels of GLVs (hexanal, trans-2-hexenal, hexanol, cis-3-hexenol, and trans-2-hexenol), total phenols, monomeric anthocyanins, and percent polymeric ...