Production of proline and protease with different organic wastes in bacteria (Production proline and protease with organic wastes) / Produção de prolina e protease com diferentes resíduos orgânicos em bactérias (produção de prolina e protease com resíduos orgânicos)

In this study, we investigated the proline and protease production of different bacteria in several organic waste materials. Our aim was to produce proline and protease economically in waste that is abundantly available while reducing its environmental impact. 5 ml of different organic waste materials (OWW: Olive waste water; N.B: Nutrient Broth; EW: Eggshell; PBS: PBS buffer; PLW: Peach leaf wastes; TCW: Turkish coffee wastes; TWW: Tea waste water; WCW: Waste cheese whey; WFO: Waste frying oil) were placed in 10 ml grow tubes, inoculated and incubated for 24 h. Phosphate-buffered saline and 10% solutions of different organic wastes were added. These cultures were subsequently incubated at 37°C for 24 h. Cells were harvested at 24 h for L-proline assay. 1 ml of culture was transferred by pipette into an Eppendorf tube and centrifuged at 14,000 rpm for 20 min at room temperature. Cellular debris was removed by centrifuge and the supernatant was used for proline activity assays. Protease activity was determined using a modified method with casein as the substrate. We found that proline and protease can easily be produced economically using Turkish coffee wastes (TCW), Waste cheese whey (WCW) and Olive waste water (OWW) organic waste. We believe that this study will result in similar research leading to the economical use of these waste materials thus reducing their impact on the environment.

Neste estudo, investigamos a produção de prolina e protease de diferentes bactérias em diversos resíduos orgânicos. Nosso objetivo era produzir prolina e protease economicamente em resíduos que estão disponíveis em abundância, reduzindo seu impacto ambiental. Cinco ml de diferentes materiais de resíduos orgânicos (OWW: resíduos de azeitona; NB: caldo nutriente; EW: casca de ovo; PBS: tampão PBS; PLW: resíduos de folhas de pêssego; TCW: resíduos de café turco; TWW: resíduos de chá; WCW: resíduos de queijo soro de leite; WFO: óleo de fritura residual) foram colocados em tubos de cultivo de 10 ml, inoculados e incubados por 24 horas. Adicionaram-se solução salina tamponada com fosfato e soluções a 10% de diferentes resíduos orgânicos. Essas culturas foram subsequentemente incubadas a 37° C durante 24 h. As células foram colhidas às 24 h para o ensaio de L-prolina. Um ml de cultura foi transferido por pipeta para um tubo Eppendorf e centrifugado a 14.000 rpm, por 20 min, em temperatura ambiente. Os detritos celulares foram removidos por centrifugação e o sobrenadante foi usado para ensaios de atividade de prolina. A atividade da protease foi determinada usando um método modificado com caseína como substrato. Descobrimos que a prolina e a protease podem ser facilmente produzidas economicamente, usando resíduos de café turco (TCW), resíduos de soro de queijo (WCW) e resíduos orgânicos de água de oliva (OWW). Acreditamos que este estudo resultará em pesquisas semelhantes, levando ao uso econômico desses materiais residuais, reduzindo, assim, seu impacto no meio ambiente.

Expression of delta1-pyrroline-5-carboxylate synthetase gene during drought in rice (Oryza sativa L.).

The 45-days-old seedlings of drought resistant (N-22, CR143-2-2) and susceptible rice (Oryza sativa L.) genotypes (Panidhan, Pusa-169) were subjected to osmotic stress in PEG-6000 solution of -10 and -16 bar and the relative water content (RWC), proline content, and pyrroline-5-carboxylate synthetase (P5CS) activity and its P5CS expression were studied. A gradual decrease in RWC was observed in tolerant genotypes, whereas the decrease was drastic in susceptible ones. Proline content and P5CS activity increased both in susceptible and tolerant genotypes; the increase was higher in tolerant genotypes. Higher proline levels in tolerant genotypes were due to increased P5CS activity. The EcoRI, BamHI and XbaI restricted DNA of N-22 and Panidhan genotypes were hybridized with Arabidopsis P5CS sequence and a single band (approx 2.4 kb) was observed, however, P5CS expression was more in N-22 as compared to Panidhan.

Value of proline estimation in diagnosis of hepatic fascioliasis

In the present study, 46 patients with clinical manifestations compatible with those of hepatic fascioliasis [Viz: tender liver, eosinophilia and/or fever] were studied to evaluate the usefulness of estimating proline in plasma, duodenal aspirate and in urine for diagnosis of hepatic fascioliasis. After thorough evaluation the final diagnosis was: hepatic fascioliasis in 12 patients, schistosomiasis in 8 patients, malignant liver in 7 patients, fatty liver in 5 patients, acute viral hepatitis in 5 patients, congestive heart failure in 7 patients and chronic active hepatitis in 2 patients. Plasma proline levels were raised significantly in patients with: fascioliasis [P < 0.01]; malignant liver [P < 0.01]; acute viral hepatitis [P < 0.01] and chronic viral hepatitis [P < 0.01] in comparison with control. While plasma proline levels in patients with schistosomiasis; fatty liver and congestive heart failure were not significantly increased, suggesting that the test to be a good negative one for the exclusion of fascioliasis. Only patients with hepatic fascioliasis showed high proline levels in duodenal aspirate [200 folds of controls, P <.0.01]. Also, 33% of patients with hepatic fascioliasis accompanied with high prolinemia [> 800 umol/L] showed proline in urine while other tested groups showed no proline in urine So, estimation of proline in duodenal aspirate and in urine will, probably prove to be a very useful tests for the differentiation between hepatic fascioliasis and other medical conditions confused with it