5 research outputs found
Korištenje smrvljenih ljuštura morskih račića za proizvodnju hitinaze s pomoću soja Serratia marcescens WF
From 102 Serratia marcescens strains screened, 57 strains showed chitinase activity and Serratia marcescens WF showed the highest chitinolytic activity so this strain was selected for further study on the use of crude shrimp waste for chitinase production. The concentration of crude shrimp shell content at 10–70 g/L, incubation temperature of 28–37 °C, pH=6–9, and time 24–96 h on kinetics of chitinase production by S. marcescens WF were evaluated. The maximal chitinase production related to process variables was obtained with the second order polynomial model: dry shrimp shell powder at 6 %, pH=6.5, temperature of 28 °C during fermentation for up to 72 h.Od 102 ispitana soja Serratia marcescens, 57 sojeva imalo je hitinaznu aktivnost, a Serratia marcescens WF imao je najveću hitinolitsku aktivnost, pa je odabran za daljnja ispitivanja proizvodnje hitinaze na smrvljenim ljušturama morskih račića. Kinetika proizvodnje hitinaze sa sojem Serratia marcescens ispitana je korištenjem 10–70 g/L smrvljenih ljuštura račića uz temperaturu inkubacije od 28 do 37 °C, pH=6–9 tijekom 24–96 h. Maksimalna proizvodnja hitinaze postignuta je primjenom polinomskoga modela drugoga reda za varijable procesa: 6 % suhih smrvljenih ljuštura, pH=6,5, temperatura 28 °C tijekom fermentacije do 72 h
Propiedades nutraceĂşticas del licopeno Nutraceutical properties of lycopene
Las recomendaciones dietarias en los Ăşltimos años proponen el incremento del consumo de alimentos que contienen fitoquĂmicos, ya que Ă©stos proveen efectos benĂ©ficos para la salud humana y juegan un papel importante en la prevenciĂłn de enfermedades crĂłnicas. El licopeno, carotenoide responsable del color rojo de los tomates, ha atraĂdo la atenciĂłn debido a sus propiedades biolĂłgicas y fisicoquĂmicas en la prevenciĂłn de enfermedades crĂłnicas como cáncer, enfermedades cardiovasculares y neurodegenerativas, e hipertensiĂłn, entre otras, en las cuales el estrĂ©s oxidativo es un importante factor etiolĂłgico. Los antioxidantes, incluyendo al licopeno, interactĂşan con las especies reactivas del oxĂgeno, pudiendo mitigar el efecto dañino y jugar un papel significativo en la prevenciĂłn de dichas enfermedades. Este artĂculo presenta una revisiĂłn de algunos estudios epidemiolĂłgicos realizados en los Ăşltimos años acerca de los efectos benĂ©ficos del licopeno en la salud humana.<br>In recent years, dietary recommendations have suggested an increase in the consumption of foods that contain phytochemicals that provide benefits to human health and play an important role in preventing chronic diseases. Lycopene -the carotenoid responsible for the red color of tomatoes-has attracted attention because of its physicochemical and biological properties in the prevention of chronic diseases in which oxidative stress is a major etiological factor, such as cancer, cardiovascular and neurodegenerative diseases, and hypertension, among others. Antioxidants, including lycopene, interact with reactive oxygen species, can mitigate their damaging effects and play a significant role in preventing these diseases. This article presents a review of some epidemiological studies published in recent years on beneficial effects of lycopene in human health
Use of Cholinesterase Activity in Monitoring Organophosphate Pesticide Exposure of Cattle Produced in Tropical Areas
The Use of Crude Shrimp Shell Powder for Chitinase Production by Serratia marcescens WF
From 102 Serratia marcescens strains screened, 57 strains showed chitinase activity and Serratia marcescens WF showed the highest chitinolytic activity so this strain was selected for further study on the use of crude shrimp waste for chitinase production. The concentration of crude shrimp shell content at 10–70 g/L, incubation temperature of 28–37 °C, pH=6–9, and time 24–96 h on kinetics of chitinase production by S. marcescens WF were evaluated. The maximal chitinase production related to process variables was obtained with the second order polynomial model: dry shrimp shell powder at 6 %, pH=6.5, temperature of 28 °C during fermentation for up to 72 h