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Partial purification and characterization of pectin methylesterase from acerola (Malpighia glabra L.)
(Amer Chemical Soc, 2002-07-03)
The enzyme pectin methylesterase (PME) is present in acerola fruit and was partially purified by gel filtration on Sephadex G-100. The results of gel filtration showed different PME isoforms. The total PME (precipitated ...
Mechanical properties, hydrophilicity and water activity of starch-gum film: effect of additives and deacetylated xanthan gum
(Elsevier B.V., 2005-03-01)
The effect of deacetylated xanthan gum, additives (sucrose, soybean oil, sodium phosphate and propylene glycol) and pH modifications on mechanical properties, hydrophilicity and water activity of cassava starch-xanthan gum ...
Glass transitions and state diagram for freeze-dried pineapple
(Elsevier B.V., 2001-01-01)
Glass transition temperature of freeze-dried pineapple conditioned by adsorption at various water activities at 25 degreesC was determined by differential scanning calorimetry (DSC). High moisture content samples corresponding ...
Analytical procedure for total mercury determination in fishes and shrimps by chronopotentiometric stripping analysis at gold film electrodes after microwave digestion
(Elsevier B.V., 2007-01-01)
A method for the total mercury determination in fish and shrimps employing chronopotentiometric stripping analysis on gold film electrodes is described. Fish and shrimp tissues were digested using a microwave oven equipped ...
Antioxidant effect of saponin: potential action of a soybean flavonoid on glucose tolerance and risk factors for atherosclerosis
(Taylor & Francis Ltd, 2005-03-01)
At the present time, much attention is being paid to antioxidant substances because many pathological conditions are associated with oxidative stress. The purpose of the present study was to discover the potency of saponin ...
Isolation and HPLC quantitative analysis of flavonoid glycosides from Brazilian beverages (Maytenus ilicifolia and M-aquifolium)
(Amer Chemical Soc, 2001-08-01)
Aqueous infusions of Brazilian Maytenus leaves are used as beverages, foodstuffs, and phytomedicines. Previously, we isolated two new flavonoid tetrasaccharides from the infusion of Maytenus aquifolium leaves that showed ...
Gas chromatographic-olfactometric characterization of aroma compounds in two types of cashew apple nectar
(Amer Chemical Soc, 2003-02-12)
Cashew apple nectar is a secondary product from the production of cashew nuts and possesses an exotic tropical aroma. Aroma volatiles in pasteurized and reconstituted (from concentrate) Brazilian cashew apple nectars were ...
Metabolism of stevioside by chickens
(Amer Chemical Soc, 2003-02-12)
In intubation experiments (643-1168 mg per animal), most of the stevioside administered to chickens was recovered unchanged in the excreta, and only about 2% was converted into steviol. Neither stevioside nor steviol could ...
Mutagenic activity of sweepings and pigments from a household-wax factory assayed with Salmonella typhimurium
(Elsevier B.V., 2004-12-01)
The mutagenic activity of garbage originating from a household wax industry was determined by the Salmonella/microsome assay, using the bacterial strains TA100, TA98 and YG1024. The garbage was obtained by sweeping the ...
Partial purification, heat stability and kinetic characterization of the pectinmethylesterase from Brazilian guava, Paluma cultivars
(Elsevier B.V., 2006-03-01)
Pectinmethylesterase (PME) was extracted from guava fruit (Psidium guajava L.), cultivar Paluma, by 70% ammonium sulphate saturation and partially purified by gel filtration on Sephadex G100. Gel filtration showed PME ...