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Shillong, India

Syngai G.G.,Lady Keane College | Gopi R.,Annamalai University | Bharali R.,Gauhati University | Dey S.,North - Eastern Hill University | And 2 more authors.
Journal of Food Science and Technology | Year: 2015

Probiotics are live microbes which when administered in adequate amounts as functional food ingredients confer a health benefit on the host. Their versatility is in terms of their usage which ranges from the humans to the ruminants, pigs and poultry, and also in aquaculture practices. In this review, the microorganisms frequently used as probiotics in human and animal welfare has been described, and also highlighted are the necessary criteria required to be fulfilled for their use in humans on the one hand and on the other as microbial feed additives in animal husbandry. Further elaborated in this article are the sources from where probiotics can be derived, the possible mechanisms by which they act, and their future potential role as antioxidants is also discussed. © 2015 Association of Food Scientists & Technologists (India) Source

Syngai G.G.,Lady Keane College | Dey S.,North - Eastern Hill University | Bharali R.,Gauhati University
Asian Journal of Pharmaceutical and Clinical Research | Year: 2016

Objectives: To evaluate the toxicity levels of the aqueous extract of Allium sativum on Cyprinus carpio. Methods: Fresh garlic (A. sativum) was procured from a local market in Shillong, Meghalaya, India; and the crude aqueous extract of which was used in the acute toxicity tests to determine the 96 hrs median lethal concentration 50% (96 hrs LC50) on juvenile common carp (C. carpio) via bath immersion treatment. Results: The 96 hrs LC50 of the aqueous garlic extract for juveniles of C. carpio was estimated to be 253.19 mg/L. Furthermore, fish exposed to the different concentrations of the aqueous garlic extract exhibited abnormal behavior. The susceptibility of C. carpio to the lethal effects of the aqueous garlic extract was duration and concentration-dependent. Fish mortality was found to be associated with the decrease in pH values. Conclusion: The current study indicates that the aqueous garlic extract has a low toxicity on C. carpio and therefore can be safely used in this species for any experimental purpose. Besides this, it also provides baseline information on the dosage for the aqueous garlic extract to be used as a potential management tool in aquaculture. © 2016, Innovare Academics Sciences Pvt. Ltd. All rights reserved. Source

Laloo D.,Dibrugarh University | Gogoi B.,Dibrugarh University | Lyngdoh W.,Lady Keane College | Zaman K.,Dibrugarh University | Sharma H.K.,Dibrugarh University
Asian Journal of Chemistry | Year: 2016

The aim of this study is to examine possible antioxidant, analgesic and anti-inflammatory activities of the stem bark of Oroxylum indicum, an endemic plant of Northeast India. The hydro-alcoholic extract was evaluated for their antioxidant activity by using DPPH scavenging method and phenolic and flavanoid content was estimated. The analgesic and anti-inflammatory assays were carried out on adult male Wistar albino rats by hot plate and carrageenan-induced paw edema method. The content of phenolic and flavanoid compound in hydroalcoholic extract in terms of gallic acid and quercetin equivalent (GAE) is 52.67 mg/L and 64.63 mg/L respectively. The extract showed antioxidant activity with IC50 value of 39.82 -g/mL as compared to the ascorbic acid which exhibited IC50 value of 26.17 -g/mL. The analgesic activity was assayed by hot plate method using diclofenac as a standard drug at a dose of 10 mg/kg body weight and the results were expressed as mean increase in latency after drug administration. The anti-inflammatory activity was evaluated by carrageenaninduced rat paw edema model using indomethacin standard drug at a dose of 10 mg/kg body weight. The results were expressed in terms of mean increase in paw volume - SEM. The extract of the stem bark was given in doses of 250 and 500 mg/kg body weight. All the doses were administered per orally. Results revealed that Oroxylum indicum posseses remarkable analgesic and anti-inflammatory activities. Further studies are needed for isolation of active molecule and establishment of mechanism of action. Source

Constantinescu I.C.,Grigore Antipa National Museum of Natural History | Chisamera G.,Grigore Antipa National Museum of Natural History | Mukhim D.K.B.,Lady Keane College | Adam C.,Grigore Antipa National Museum of Natural History
Zootaxa | Year: 2014

The paper describes two new species of feather mites collected on Psilopogon virens (Boddaert) (Piciformes: Megalaimidae) in India (Meghalaya): Megalaimobius massarae sp. nov. (Analgoidea: Pteronyssidae) and Picalgoides arbenzi sp. nov. (Psoroptoidea: Psoroptoididae). Males of M. massarae sp. nov. differ from the other three species of the genus by the shape of the transventral sclerite which is much deeper concave. The female of the new species has the external copulatory tub with an acute apex (this structure has a truncated apex in females of other species). Males of Picalgoides arbenzi sp. nov. differ from the closest species P. capitonis Černý, 1974 mainly by the shape of adanal apodemes which are fused into a large arch encircling the anal field. Females of the new species have the hysteronotal shield with acute posterior angles and setae d2 situated on the lateral margins of this shield (in females of P. capitonis the hysteronotal shield has the posterior angles rounded and setae d2 situated at a short distance from the lateral margins of this shield). Copyright © 2014 Magnolia Press. Source

Constantinescu I.C.,Grigore Antipa National Museum of Natural History | Cobzaru I.,Institute of Biology Bucharest of Romanian Academy | Mukhim D.K.B.,Lady Keane College | Adam C.,Grigore Antipa National Museum of Natural History
Zootaxa | Year: 2016

Two new feather mite species of the genus Trouessartia Canestrini are described from birds captured in Meghalaya (India): Trouessartia longidenticulata Constantinescu sp. n. from Pycnonotus cafer (Linnaeus) (Passeriformes, Pycnonotidae) and Trouessartia dicruri Constantinescu sp. n. from Dicrurus aeneus (Vieillot) (Passeriformes, Dicruridae). In the genus Trouessartia, males of T. longidenticulata show a unique character state in having the lamellae of the opisthosomal lobes with long and sharp denticles. Both sexes of T. dicruri differ from closely related T. delicatula Gaud, 1952 by smaller body size (T. dicruri males are 420-452 long, females 500-532 long, vs. c. 575 and 595, respectively in T. delicatula); males have the adanal apodemes without apophyses and the terminal lamellae in a shape of a parallelogram (vs. the adanal apodemes have a pair of apophyses and the terminal lamellae are semi-ovate); the opisthosomal lobes do not touch each other at the inner margins (vs. the opisthosomal lobes touch each other at the inner margins, at the level of setae h3); in females, setae h1 are lanceolate (vs. spiculiform). Copyright © 2016 Magnolia Press. Source

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