Issue 3 Volume 2 (2010)

The possible protective effect of Melatonin was investigated for its antioxidant and lipid peroxidation activity against 7,12-dimethylbenz(a)anthracene (DMBA) induced mammary carcinogenesis in female albino Wistar rats. Mammary tumor was developed to the animals by administering 5mg/kg body weight of DMBA orally at weekly intervals for one month. Intraperitoneal administration of melatonin 5mg/ml per animals for 15 days prior to the first oral administration of DMBA was continued for a month. Af

---

Read More

An analytical relationship for the optimum design of continuous stirred tank reactors (CSTR’s) in series performing phenol degradation was derived. The optimal design is based on the minimum overall reactor volume required for a certain degree of phenol removal. It is assumed that cell growth kinetics follow the Haldanes kinetics model with respect to phenol and with no oxygen limitation. The effect of operating parameters such as phenol inlet feed concentration, phenol removal efficiency and

---

Read More

This study reports decolorization of Rhodamine B and Congo red by a partially purified laccase from Lentinus polychrous Lév. in the presence or absence of 2,2-azinobis (3-ethylbenzothiazoline-6-sulfonate) diammonium salt (ABTS) as a redox mediator. The decolorization study showed that about 90% of Rhodamine B could be decolorized within 52 h, whereas Congo red could be decolorized more than 75% within 3 h. The most effective concentration of the redox mediator was 0.10 mM ABTS. The optimu

---

Read More

Filamentous fungi are naturally adapted to adhere on the surfaces in submerged cultures. Cell adhesion plays a vital role in biofilm development in submerged cultures. The objective of the present study is to evaluate the growth rate of Aspergillus on the polyester sheet and muslin cloth with and without solid support in submerged cultures. The growth of A. niger was observed to be high in polyester sheet when compared with muslin cloth.

---

Read More