Studies were conducted to evaluate the combined effects of spontaneous fermentation and amylase-rich flours (ARF) on some nutritive value, functional and viscoelastic properties of cowpea-fortified nixtamalized maize. A 2 x 3 x 3 factorial design, with fermentation medium, fermentation time and ARF level, was performed. The blends were fermented for the specific times and analysed for their tit...

We present a theoretical description of the effect of polyvalent ions on the interaction between titratable macroions. The model system consists of two point-like macroions with dissociable sites, immersed in an asymmetric ionic mixture of monovalent and polyvalent salts. We formulate a dressed ion strong coupling theory, based on the decomposition of the asymmetric ionic mixture into a weakly ...

1. In six volunteers, the effect of intragastric administration of different water-soluble chemical isolates of dietary fibre on gastric secretion, acidity and emptying was studied. 2. At 30 min after administration of the test meals, the stomach contents were completely aspirated and the volume, pH, phenol red concentration, total titratable acidity and different electrolytes were measured. 3....

An urgent task of today for grape growers is to find effective ways achieve the compliance conditional parameters phenolic ripeness grapes while maintaining high cropping capacity. In this study influence foliar treatment with nitrogen-containing preparations "Siamino Pro 500" on productivity and maturity ‘Cabernet-Sauvignon’ variety was investigated. Studies were carried out during 2018-2019. ...

Mango is one of the most cultivated tropical fruits worldwide and few drought-tolerant plants. Thus, in this study effect a sustained deficit irrigation (SDI) strategy on mango yield quality was assessed with aim reducing water crop. A randomized block design four treatments developed: (i) full (FI), assuring crop’s needs, three levels SDI receiving 75%, 50%, 33% (SDI75, SDI50, SDI33). Yield, m...

One hundred per cent apple, orange and grapefruit juices were analysed for ascorbic acid (AA) content, total polyphenolic content (TPC), other parameters: titratable acids (TA), malic (MA), citric (CA), volatile (VA), soluble solids (SS), density, the of free amino as formol number (FN). Some apple on Czech market contain added vitamin C, AA such (268–632 mg L–1) is several times higher than th...

This study aimed to investigate the nutritional and antioxidant composition of dried wild bilberry, blackcurrant, blackberry pomaces by evaluating proximate content, titratable acidity, color, total phenolics, flavonoids, anthocyanins activity. In addition, fatty acid polyphenolic profiles were assessed using chromatographic methods. Higher fiber, fat, mineral contents found in as compared with...

Glutamine establishes feedback control of glutamine synthetase (EC 6.3.1.2) in Escherichia coli over a novel loop, viz. by its effect on an enzymatic adenylylation of glutamine synthetase, whose activity is thus modulated. Positive effecters of the adenylyl transfer reaction, magnesium ion and glutamine, increase the number of -SH groups in adenylyltransferase (EC 2.7.7. -) titratable by 5,5’-d...