The activity of chymosin, plasmin, and Lactococcus lactis enzymes (cell envelope proteinase, intracellular peptidases, and glycolytic enzymes) were determined after 5-min exposures to pressures up to 800 MPa. Plasmin was unaffected by any pressure treatment. Chymosin activity was unaffected up to 400 MPa and decreased at 500 to 800 MPa. Fifty percent of control chymosin activity remained after ...

A highly significant effect (p<0.05) of storage period on physico-chemical characteristics and sensory parameters of Apricot fruit produced in Rawalakot areas of Azad Jammu and Kashmir was investigated at ambient temperature (Relative humidity 60-63% and temperature 28-30 C). The physicoo chemical characteristics such as weight loss, total soluble solids, titratable acidity, ascorbic acid and s...

The aquaporin-4 (AQP4) water channel has been proposed to play a role in gastric acid secretion. Immunocytochemistry using anti-AQP4 antibodies showed strong AQP4 protein expression at the basolateral membrane of gastric parietal cells in wild-type (+/+) mice. AQP4 involvement in gastric acid secretion was studied using transgenic null (-/-) mice deficient in AQP4 protein. -/- Mice had grossly ...

HE RECENT EMPHASIS on disorders of acid-base metabolism has necessitated a reappraisal of those urinary constituents which represent elimination of acid or base. The conventional expression for urinary acid excretion (“net acid excretion”) is titratable acid bicarbonate + ammonia (T.A. CO2 + NH4 ) (1). It has been the contention of this laboratory that acid excretion is more inclusively represe...

We studied the role of duodenal cellular ion transport in epithelial defense mechanisms in response to rapid shifts of luminal pH. We used in vivo microscopy to measure duodenal epithelial cell intracellular pH (pH(i)), mucus gel thickness, blood flow, and HCO secretion in anesthetized rats with or without the Na(+)/H(+) exchange inhibitor 5-(N,N-dimethyl)-amiloride (DMA) or the anion transport...

In 2002, the maturity of grapevine was researched on the basis of sugar content, total titratable acidity and pH at seven locations with an undulating topography in four varieties 'Chardonnay', 'Riesling', 'Welschriesling' and 'Sauvignon'. All sampling points were geo-referenced simultaneously with DGPS for creating sugar maps. The significant relationship between the varying altitude above sea...

This study investigated the effects of cerium (Ce) on growth and fruit quality strawberries under salt stress. The findings revealed that stress markedly enhanced activities antioxidant enzymes increased contents malonaldehyde (MDA) hydrogen peroxide (H2O2) in leaves anthocyanins, phenolic compounds, vitamin C (Vc), soluble sugar (SS) titratable acid (TA) fruits. Ce improved ascorbate peroxidas...

EVANS, JOHN R., LIONEL H. OPIE, AND JOSEPH C. SHIPP. Metabolism of palmitic acid in perfused rat heart. Am. J. Fhysiol. 205(4): 766-770. I g63,-Metabolism of fatty acid was studied in the isolated rat heart perfused with albumin-bound palmitate-C 14. Uptake of fatty acid by the heart was related to the concentration of fatty acid present and the molar ratio of fatty acid to albumin in the perfu...

High dose methotrexate therapy requires a high alkaline urine output. In order to evaluate the effect of various beverages on the urine acid output, healthy volunteers (n = 6) took 1.5-2 liters of a test drink during a 2-h period. On the test day urine pH and urine acid excretion (titratable acid plus ammonia minus bicarbonate) were measured. Controls received water and tea as test drink. Orang...