RESUMO
Apis mellifera is an important pollinator that has a prominent impact on crops' ecological balance. Beekeeping provides us with more valuable products like honey, pollen, propolis, beeswax, and royal jelly. The ongoing era demands more scientific and environment-friendly strategies to improve the beekeeping sector internationally. Nowadays, the use of synbiotics (a combination of probiotics and prebiotics) has been declared as the need of the hour. However, little bit studies have been carried out in this regard. To improve the beekeeping sector in Pakistan, a study was designed to exploration of probiotic and organic acids on bee tissue ileum (small intestine). 108 Colony forming units (C.F.Us) of Bacillus clausii and Lactobacillus brevis were provided with and without mixing in 1.96% acetic acid, 2.91% acetic acid, and 2.99% lactic acid to caged worker bees under controlled laboratory conditions. The provision did not affect the intestine harmfully. The mean intestinal lumen diameters (µm2) were 133.33 ± 8.82, 63.33 ± 3.33, 186.67 ± 72.19, 250.00 ± 28.87, 166.67 ± 17.64, 193.33 ± 46.31, and 140.00 ± 61.10 in experiments (1, 2, 3, 5, and 6 respectively) compared to control's 113.33 ± 38.44. Worker bees with better digestion conditions prove honeybee's health and efficiency.
Assuntos
Probióticos , Animais , Abelhas , Ácidos , Criação de Abelhas , Ácido Acético/farmacologia , IntestinosRESUMO
The purpose of the present investigations was to improve the yield of alkaline protease for leather dehairing by subjecting the indigenous proteolytic strain Bacillus licheniformis N-2 to various mutagenic treatments viz. UV irradiations, NTG (N-methyl-N-nitro-N-nitrosoguinidine) and MMS (methyl methane sulfonate). After screening on skim milk agar plates, a total of nine positive mutants were selected for shake flask experiments. Among these, the best proteolytic mutant designated as UV-9 showed 1.4 fold higher alkaline protease activity in preoptimized growth medium than the parent strain. The fermentation profile and kinetic parameters such u(h-1), Yp/s, Yp/x, Yx/s, q s, Qs, q p and Qp also indicated the superiority of the selected mutant UV-9 for alkaline protease production over the parent strain and rest of the mutants. The dehairing capability of mutant UV-9 alkaline protease was analyzed by soaking goat skin pieces for different time intervals (3-15 h) at 40 º C. A complete dehairing without degradation of collagen was achieved after 12 h, indicating its commercial exploitation in leather industry.