Browsing by Author "Manjari"

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Effect of different essential oils on enzymatic activity of oyster mushroom (Pleurotus florida)
(Indian Academy of Sciences, 2021) Manjari; Ram Chandra
An experiment was carried out to study the effect of different essential oils on enzymatic activity of stored oyster mushroom (Pleurotus florida). The harvested fruiting body was treated with four essential oils, i.e. lemongrass oil, citronella oil, mint oil and clove oil at two different concentrations – 5 and 10 μl – to test the total phenol content (TPC) and activity of three important ammonia lyase (PAL), peroxidase (POD) and polyphenol oxidase (PPO) that are involved in post-harvest quality preservation of mushrooms. TPC (0.286 mg/g), PAL content (0.038 μM/g), PPO content (0.042 U/mg) and POD content (0.38 U/mg) were found significant in mint oiltreated mushroom at 10 μl concentration. TPC and PAL content were higher in essential oil-treated compared to the control samples, whereas PPO and POD contents were lower in the treated samples, signifying that essential oils treatment had a positive impact on the quality of harvested mushrooms. This preservative technique will help in increasing the harvested fruiting bodies. © 2021,Current Science.All Rights Reserved
Literature Review of Vehicles Routing Problems Using Metaheuristics: Prospects and Trends
(Springer Science and Business Media Deutschland GmbH, 2024) Chitranshi Mishra; Manjari; Suneet Singh; Sunil K. Jauhar; Saurabh Pratap; Ajay Kumar Pandey
The field of GA and SA has made significant progress in solving complex optimization problems, and it continues to evolve with the emergence of new algorithms. This paper focuses on providing a comprehensive overview of the research conducted in GA and SA specifically related to vehicle routing and the application of genetic algorithms and simulated annealing. The study involves a bibliometric analysis of approximately 48 papers published from 2018 onwards. These papers are classified based on relevant keywords to examine the advancements and trends in the field. Additionally, this paper discusses recent developments, identifies research gaps, and outlines future directions specifically in the context of vehicle routing and the application of genetic algorithms and simulated annealing algorithms. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.
Plasma isatin is increased in maternal anxiety and obstetrical stress
(2002) Manjari; S. Pandey; A. Chakrabarti; L.K. Pandey; S.K. Bhattacharya
Isatin (2,3-dioxoindole) is a component of tribulin. Tribulin, an inhibitor of monoamine oxidase (MAO) and benzodiazepine (BDZ) receptor binding, bas been identified as an endogenous marker of stress and anxiety. In animal experiments, isatin bas been found to produce an anxiety-like action and its level is increased during stress and anxiety. Maternal anxiety and obstetrical complications are two different stressors that can affect perinatal outcome. In this study we investigated plasma isatin levels in maternal anxiety and stress. The study was conducted in 279 pregnant and non-pregnant women. The patients were stratified into five groups-A, B, C, D and E. Plasma cortisol was measured to assess the intensity of the stressor and plasma isatin was measured by a high-performance liquid chromatography (HPLC) method. Perinatal outcome was measured by gestational weight and birth weight of the baby. Non-pregnant women (group D) had a significantly lower plasma isatin level (P < 0.001) compared to women with normal pregnancies (group E), whose plasma isatin was monitored once in each trimester. Patients with anxiety and psychological stress (group B) and patients with obstetrical stress from obstetrical complications (group C had significantly higher levels of plasma cortisol (P < 0.001) and plasma isatin (P < 0.001) compared to women with normal pregnancies (group A). Perinatal outcome data were significantly lower (P < 0.001) in both groups B and C. In conclusion, our data proved that maternal anxiety and obstetrical complications are two different stressors evidenced by higher plasma cortisol and isatin levels in patients of these two groups. The present study further validated the postulated role of isatin as a marker of anxiety and stress in a clinically relevant condition in humans. Copyright © 2002 John Wiley & Sons, Ltd.