ß-Lactams are the most widely used antibiotics, and ß-lactamases are the greatest source of resistance to them. Colorimetric tests are good, rapid, indicators of ß-lactamase production and its contingent resistance in Haemophilus, Moraxella and Neisseria spp. They can also be applied to Gram-negative bacilli but are less useful, since the usual question is not whether a ß-lactamase is produced ...

Beta-carotene (ß-carotene) is one of many carotenoids found in nature. In the human nutrition field, evidence suggests that higher blood levels of ß-carotene as well as other carotenoids such as alpha-carotene, lycopene, lutein, zeaxanthin, and ß-cryptoxanthin may be associated with lower risk of several chronic diseases. ß-carotene, a-carotene, and ß-cryptoxanthin have pro-vitamin A activity, ...

Background ß-alanine has ergogenic potential based on its relationship with carnosine. Carnosine is rapidly degraded into ß-alanine and histidine as soon as it enters the blood. So there is no advantage to using direct carnosine supplementation. Previous studies have demonstrated that taking ß-alanine orally is effective at increasing intramuscular carnosine levels. The resistance training athl...

A new phenylethanoid glycoside acylated with syringic acid, namely acanmontanoside, was isolated from the aerial portions of Acanthus montanus (Nees). T. Anderson, along with decaffeoylverbascoside, verbascoside, isoverbascoside, leucosceptoside A, (2R)-2-O-ß-D-glucopyranosyl-2H-1,4-benzoxazin-3(4H)-one (HBOA-Glc), (2R)-2-O-ß-D-glucopyranosyl-4-hydroxy-2H-1,4-benzoxazin-3(4H)-one (DIBOA-Glc), (...

The present study was undertaken to investigate the effects of ß-alanine (a glycine agonist), on learning and memory in mice. ß-alanine (5, 10, 20 and 40 mg/kg i.p.) was administered for 6 successive days, to young (3 months old) and aged-mice (16 months old). The learning and memory parameters were assessed, using elevated plus-maze and passive-avoidance apparatus. The effect of ß-alanine (20 ...

PARTICIPANTS RATED THE PERCEIVED complexity and melodiousness of fractal (1/f ) tone sequences with specific ß values. Plotting the mean complexity and melodicity ratings against each other and against ß indicated that: (1) a melody’s spectral power density slope ( ß) can be used as an objective measure of its perceived complexity; (2) ß ≈ 1.50 for optimally preferred melodies; (3) perceived co...

Given the broad use of nanostructured crystalline titania films, an environmentally friendly and more sustainable synthesis route is highly desirable. Here, a water-based, low-temperature presented to synthesize foam-like films. A pearl necklace-like nanostructure introduced as tailored morphology via biotemplating with major bovine whey protein ß-lactoglobulin (ß-lg). It shown that crystalliza...

Saffron essential oil has a pleasant aroma and medicinal activities. However, it is sensible into the environmental condition. Therefore, it should be protected against unwanted changes during storage or processing. Encapsulation is introduced as a process by which liable materials are protected from unwanted changes. In the present study, different ratios (0:100, 25:75, 50:50, 75:25, and 100:0...

Saffron essential oil has a pleasant aroma and medicinal activities. However, it is sensible into the environmental condition. Therefore, it should be protected against unwanted changes during storage or processing. Encapsulation is introduced as a process by which liable materials are protected from unwanted changes. In the present study, different ratios (0:100, 25:75, 50:50, 75:25, and 100:0...