ABSTRACT
Pomegranate fruit is a rich source of bioactive compounds. The serious concern over unprocessed fruit juices is microbial contamination, which effectively inactivated by thermal processing, but it significantly affects juice functional compounds. Therefore, the effect of gamma irradiation and ultrasonic on inoculated microbial to pomegranate juices was studied. Two pomegranate cultivars were purchased from the Agricultural Research Center of Saveh, and their juices were extracted by a manual device and immediately centrifuged. Then the studied microorganisms were resuspended in sterile pomegranate juices. The juices were continuously sonicated at amplitude levels of 50, 75 and 100% and times of 0, 3, 6, 9, 12 and 15 min at temperature of 25 +/- 1 C. Irradiation treatment was also carried out at various doses of 0, 0.5, 1.0, 1.5, 2.0, 2.5 and 3 kGy. The results showed that lower amplitude levels [50 and 75%] did not inactivate E. coli and S. cerevisiaesignificantly [<1.5 log reduction], while at 100% amplitude level for 15 min, their population reduced by 3.47 and 1.86 log cfu/mL, respectively. Gamma irradiation treatment at 1 kGy also reduced E. coli by 6.66 log cfu/mL, whereas at 3 kGy it reduced S. cerevisiae by 5.08 log cfu/mL. The low-dose gamma irradiation could potentially inactivate the studied microorganisms compared to the sonication, which had less destructive effects on their populations. Further research is needed to determine the effect of these methods on other fruit juices for industry purposes
ABSTRACT
Currently, laparoscopic cystectomy is the first-line therapy for ovarian benign cysts that are resistant to current therapies. There are different studies that point to ovarian reserve damage due to laparoscopic cystectomy. In this study, we evaluate the ovarian damage following laparoscopic cystectomy for non-endometriosis cysts using ultrasound and pathology findings. This is a prospective cohort study conducted between 7rd month of 2011 and 10th month of 2012 in Women hospital affiliated to Tehran university of medical sciences.45 non-endometriosis cysts [17 teratoma,7 mucinous, 10 simple serous and 11 simple cysts] underwent laparoscopic cystectomy with stripping technique. Amount of excised parenchyma, number of lost oocytes and cyst wall fibrosis thickness were histopathologically studied. Before and 3 months after surgery antral follicle count was evaluated by ultrasound. AFC after cystectomy for teratoma and simple serous was significantly reduced P<0.05. By larger teratomas and more parenchyma inadvertently removed during their excision [1.64, 0.255] reduced AFC was seen and in simple serous cysts with more removed parenchyma amount [1.5] reduced AFC occurred. In our study simple cysts excision led to a loss in AFC that was not associated with any other cyst parameters. Mucinous cysts resection led to no specific ovarian reserve damage. Laparoscopic cystectomy for non-endometriosis leads to reduced ovarian reserve
ABSTRACT
Steroid cell tumor is one of the rare ovarian tumors and forms 0.1% of all ovarian tumors, divided to three subgroups. Steroid cell tumor that are not otherwise specified [NOS] are the most common type and represent 60% of steroid cell tumors. One of the most known signs of this tumor is hormonal function, especially androgenic effects of it. Primary treatment consists of eradication of tumor via surgery. The patient is a 29 years old female with history of poly cystic ovarian syndrome since 10 years ago, who attended to the clinic of General Women Hospital of Tehran in January 2011. In pelvic ultrasonography, there was a 64x49 mm mass in the right adnexa consisting of homogeneous component. She underwent laparotomy and unilateral salpingoophorectomy was done. Pathological report was steroid cell tumor of ovary. The aim of this study is reporting one of the rare tumors of ovary and assessment of the correct way of diagnosis and treatment of it
ABSTRACT
Arachidonic acid is an essential fatty acid in human nutrition. In the present study, production of arachidonic acid by Mortierella alpina CBS 754.68 was evaluated in submerged fermentation. The fermentation variables were selected in accordance with the Plackett-Burman [PB] design and further optimized via response surface methodology [RSM]. Five significant variables, namely glucose, yeast extract, temperature, agitation rate, and fermentation time were selected for the optimization studies. The statistical model was constructed via central composite design [CCD]. Following the optimization step arachidonic acid production increased by approximately 660.5%, when compared to the screening step. The results indicate that carrying out the fermentation under the conditions of glucose at 50 g/l; yeast extract at 14 g/l; temperature of 22°C; agitation rate of 180 rpm, and fermentation time of 8 days will increase the arachidonic acid production up to 3 g/l. Results show that the optimization of culture conditions could greatly increase arachidonic acid production by Mortierella alpina CBS 754.68