Pub Date : 2022-05-01DOI: 10.56042/ijms.v51i05.65568
S. Abirami, M. Lakshmi, A. Samrot, P. J. J. Cypriyana, S. Saigeetha, G. Narendrakumar
In this study, eight halobacterial strains were isolated from seawater. Among the eight isolates, four strains grew well in nutrient medium with 40 g/100 mL of sodium chloride concentration. Amongst all, HA01 was found to show highest amylase activity than others. Highest amylase producing bacteria, i.e . HA01 was subjected for 16S rRNA sequence based identification and it was found to be Aquabacterium sp. strain AS02. The organism showed optimal amylase production at pH 7 and temperature of 42 °C and NaCl concentration of 3 M. The two substrates (banana peel and potato peel) were used for the amylase production among which banana peel showed that highest amylase activity of 6.12 U/mL than potato peel (4.27 U/mL).
{"title":"In-vitro screening of amylase producing halophilic bacteria isolated from seawater","authors":"S. Abirami, M. Lakshmi, A. Samrot, P. J. J. Cypriyana, S. Saigeetha, G. Narendrakumar","doi":"10.56042/ijms.v51i05.65568","DOIUrl":"https://doi.org/10.56042/ijms.v51i05.65568","url":null,"abstract":"In this study, eight halobacterial strains were isolated from seawater. Among the eight isolates, four strains grew well in nutrient medium with 40 g/100 mL of sodium chloride concentration. Amongst all, HA01 was found to show highest amylase activity than others. Highest amylase producing bacteria, i.e . HA01 was subjected for 16S rRNA sequence based identification and it was found to be Aquabacterium sp. strain AS02. The organism showed optimal amylase production at pH 7 and temperature of 42 °C and NaCl concentration of 3 M. The two substrates (banana peel and potato peel) were used for the amylase production among which banana peel showed that highest amylase activity of 6.12 U/mL than potato peel (4.27 U/mL).","PeriodicalId":51062,"journal":{"name":"Indian Journal of Geo-Marine Sciences","volume":"8 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84293688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-01DOI: 10.56042/ijms.v51i05.65560
D. Madathil, R. Chidambaram, Jindal
Screening of biochemical compounds in marine algae is a gateway to understand the bioactive principles of antimicrobial activity and may be a significant tool in developing environment friendly herbicides and in drug discovery. In this study, the antibacterial activity of the seaweed Amphiroa anceps extracted with methanol and ethanol was determined against clinical isolates namely Vibrio cholerae 01 ogawa, Vibrio cholerae O139, Vibrio fluvialis , Vibrio parahaemolyticus , V. parahaemolyticus 81, V. parahaemolyticus O3:K6, salmonella enteritidis type 5, Enterotoxigenic E. coli , Bacillus cereus by disc diffusion method at different concentrations. Ethanolic extract showed the highest activity against V. parahaemolyticus , V. parahaemolyticus 81 and V. cholerae . The FTIR results showed the presence of major functional groups like amine, hydrogen bonded alcohols, alkanes and aromatic rings. Four major bioactive compounds were selected based on GC-MS data and used as ligands to dock in-silico against proteins of pathogenic bacteria that were used in antibiotic studies.
{"title":"In-silico analysis of bioactive compounds extracted from seaweed Amphiroa anceps on the pathogenicity of bacteria","authors":"D. Madathil, R. Chidambaram, Jindal","doi":"10.56042/ijms.v51i05.65560","DOIUrl":"https://doi.org/10.56042/ijms.v51i05.65560","url":null,"abstract":"Screening of biochemical compounds in marine algae is a gateway to understand the bioactive principles of antimicrobial activity and may be a significant tool in developing environment friendly herbicides and in drug discovery. In this study, the antibacterial activity of the seaweed Amphiroa anceps extracted with methanol and ethanol was determined against clinical isolates namely Vibrio cholerae 01 ogawa, Vibrio cholerae O139, Vibrio fluvialis , Vibrio parahaemolyticus , V. parahaemolyticus 81, V. parahaemolyticus O3:K6, salmonella enteritidis type 5, Enterotoxigenic E. coli , Bacillus cereus by disc diffusion method at different concentrations. Ethanolic extract showed the highest activity against V. parahaemolyticus , V. parahaemolyticus 81 and V. cholerae . The FTIR results showed the presence of major functional groups like amine, hydrogen bonded alcohols, alkanes and aromatic rings. Four major bioactive compounds were selected based on GC-MS data and used as ligands to dock in-silico against proteins of pathogenic bacteria that were used in antibiotic studies.","PeriodicalId":51062,"journal":{"name":"Indian Journal of Geo-Marine Sciences","volume":"21 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79142764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.56042/ijms.v51i12.4290
{"title":"Geochemistry of metals in grain size fractionated sediments from estuarine and coastal regions along Mumbai: A baseline information","authors":"","doi":"10.56042/ijms.v51i12.4290","DOIUrl":"https://doi.org/10.56042/ijms.v51i12.4290","url":null,"abstract":"","PeriodicalId":51062,"journal":{"name":"Indian Journal of Geo-Marine Sciences","volume":"30 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84959014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.56042/ijms.v51i02.44480
D. Ray, T. Khatuaa, S. Royb, Anil Mohapatrab, Milani Mahavidyalaya, Purba, Medinipur
The gaper Champsodon capensis Regan, 1908 is reported for the first time from the east coast of India on the basis of 3 specimens (55 – 72 mm standard length) collected from Deshpran fishing harbor, West Bengal. Identification of the species is confirmed by ventral scale patterns on chin, breast, and abdomen. Earlier, this species was reported only from Andaman-Nicobar waters of India and the present finding report further range extension of the species to the northern part of the Bay of Bengal. This paper provides a detailed description of the species along with the comparison with other Champsodon species.
{"title":"First report of Champsodon capensis Regan, 1908 (Champsodontidae) from East coast of India","authors":"D. Ray, T. Khatuaa, S. Royb, Anil Mohapatrab, Milani Mahavidyalaya, Purba, Medinipur","doi":"10.56042/ijms.v51i02.44480","DOIUrl":"https://doi.org/10.56042/ijms.v51i02.44480","url":null,"abstract":"The gaper Champsodon capensis Regan, 1908 is reported for the first time from the east coast of India on the basis of 3 specimens (55 – 72 mm standard length) collected from Deshpran fishing harbor, West Bengal. Identification of the species is confirmed by ventral scale patterns on chin, breast, and abdomen. Earlier, this species was reported only from Andaman-Nicobar waters of India and the present finding report further range extension of the species to the northern part of the Bay of Bengal. This paper provides a detailed description of the species along with the comparison with other Champsodon species.","PeriodicalId":51062,"journal":{"name":"Indian Journal of Geo-Marine Sciences","volume":"36 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84997083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.56042/ijms.v51i11.3508
{"title":"Reproductive biology of Pharaoh cuttlefish Sepia pharaonis Ehrenberg, 1831 along the Gujarat coast, India","authors":"","doi":"10.56042/ijms.v51i11.3508","DOIUrl":"https://doi.org/10.56042/ijms.v51i11.3508","url":null,"abstract":"","PeriodicalId":51062,"journal":{"name":"Indian Journal of Geo-Marine Sciences","volume":"31 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75621144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.56042/ijms.v51i08.49207
{"title":"Transportation of microplastic during high-flow and low-flow seasons in southeastern Black Sea: A modelling approach","authors":"","doi":"10.56042/ijms.v51i08.49207","DOIUrl":"https://doi.org/10.56042/ijms.v51i08.49207","url":null,"abstract":"","PeriodicalId":51062,"journal":{"name":"Indian Journal of Geo-Marine Sciences","volume":"115 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79671036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.56042/ijms.v51i10.2931
{"title":"A comparative study of xylanase producing wild and mutated strains of Streptomyces variabilis VITMUVB02 isolated from Kanyakumari salt pan","authors":"","doi":"10.56042/ijms.v51i10.2931","DOIUrl":"https://doi.org/10.56042/ijms.v51i10.2931","url":null,"abstract":"","PeriodicalId":51062,"journal":{"name":"Indian Journal of Geo-Marine Sciences","volume":"16 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89714947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.56042/ijms.v51i04.35798
R. Roy, S. Prakashb, A. Lotlikerb, P. S. Sudhakarana, S. B. Choudhurya
The decadal trends in satellite-derived surface chlorophyll in conjunction with Aerosol Optical Depth (AOD) are explored in a unique area in the central Arabian Sea, known to mimic High Nutrient and Low Chlorophyll (HNLC) like conditions during late summer monsoon. The analysis indicates two recurring seasonal blooms, possibly associated with distinct biogeochemical processes in the studied region. Furthermore, the mineral dust deposition in July every year coincides with one such increase in surface chlorophyll followed by a lag period until winter monsoon. This rapid increase in the phytoplankton biomass just after the aeolian input is possibly due to an enhancement in soluble iron within the mixed layer, as suggested by AOD dust data. Most likely, this rapid increase in biomass may induce further depletion of soluble iron leading to HNLC-like conditions during the late Summer Monsoon, as reported earlier. This hypothesis is consistent with the satellite observation, which shows a decrease in surface chlorophyll during subsequent months until the convective mixing between December – January (winter monsoon). The study reveals that the presence of the HNLC region in the central Arabian Sea during the summer monsoon is not perennial like the Southern Ocean. Instead, it is a transient phenomenon primarily controlled by aerosol deposition and rapid uptake of soluble iron, which facilitate the diatom blooms as suggested by the recent output from the NASA Ocean Biogeochemical Model (NOBM).
{"title":"Response of surface chlorophyll to aerosol dust input in the Central Arabian Sea","authors":"R. Roy, S. Prakashb, A. Lotlikerb, P. S. Sudhakarana, S. B. Choudhurya","doi":"10.56042/ijms.v51i04.35798","DOIUrl":"https://doi.org/10.56042/ijms.v51i04.35798","url":null,"abstract":"The decadal trends in satellite-derived surface chlorophyll in conjunction with Aerosol Optical Depth (AOD) are explored in a unique area in the central Arabian Sea, known to mimic High Nutrient and Low Chlorophyll (HNLC) like conditions during late summer monsoon. The analysis indicates two recurring seasonal blooms, possibly associated with distinct biogeochemical processes in the studied region. Furthermore, the mineral dust deposition in July every year coincides with one such increase in surface chlorophyll followed by a lag period until winter monsoon. This rapid increase in the phytoplankton biomass just after the aeolian input is possibly due to an enhancement in soluble iron within the mixed layer, as suggested by AOD dust data. Most likely, this rapid increase in biomass may induce further depletion of soluble iron leading to HNLC-like conditions during the late Summer Monsoon, as reported earlier. This hypothesis is consistent with the satellite observation, which shows a decrease in surface chlorophyll during subsequent months until the convective mixing between December – January (winter monsoon). The study reveals that the presence of the HNLC region in the central Arabian Sea during the summer monsoon is not perennial like the Southern Ocean. Instead, it is a transient phenomenon primarily controlled by aerosol deposition and rapid uptake of soluble iron, which facilitate the diatom blooms as suggested by the recent output from the NASA Ocean Biogeochemical Model (NOBM).","PeriodicalId":51062,"journal":{"name":"Indian Journal of Geo-Marine Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90319580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.56042/ijms.v51i09.2338
{"title":"Limemud resources in the Western Indian offshore: An alternative to high grade limestone and some viable proposals","authors":"","doi":"10.56042/ijms.v51i09.2338","DOIUrl":"https://doi.org/10.56042/ijms.v51i09.2338","url":null,"abstract":"","PeriodicalId":51062,"journal":{"name":"Indian Journal of Geo-Marine Sciences","volume":"25 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74555552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.56042/ijms.v51i01.45173
Doty, K. Kumar, Sushma Kumaria, P. V. Raob
Biochemical composition of seaweeds is known to vary with species and environment. Kappaphycus alvarezii is an important commercial source of carrageenans (gel-forming and viscosifying polysaccharides). The nutritional and mineral composition of three (brown, green and pale yellow) colour forms of edible seaweed K. alvarezii is investigated in the current study. The brown colour form of this seaweed contained highest ash content of (25.99±0.22 %), crude fibre (21.0±0.68 %), and protein (8.92±0.41 %), while, the green form had highest carbohydrate (22.0±0.00 %) and sulphate (5.89±0.00 %) content. On the other hand, the pale yellow colour form had highest lipid content (0.72±0.00 %). Amongst the 17 minerals analyzed, highest total mineral macro-elements ( viz . Na, K, Ca and Mg) were recorded in the brown form (18.8±0.71 g/100 g d wt) followed by the pale yellow (17.3±1.07 g/100 g d wt) and green colour form (11.9±1.22 g/100 g d wt). The micro-elements varied within the three colour forms; however, the brown colour form had maximum micro-element content (P, Cd, Pb, As, Hg, Cr, Zn, Cu, Fe, Mn, Co, Mo and Ni; 19.96±0.24mg/100 g d wt), followed by green (8.6±0.64 mg /100 g d wt) and pale yellow form (7.15±0.58mg /100 g d wt). On the basis of this study, it could be said that these three colour forms ( i.e . brown, green and pale yellow) of Kappaphycus alvarezii could be utilized as a condiment in the omnivorous diet; however, a daily intake of 5.68 g d wt is recommended in case of the brown form, while in case of the green and pale yellow form a maximum daily intake of 9.55 and 10.5 g d wt, respectively is recommended. The study also reveals that the three colour-forms differed in their nutritional and mineral composition.
众所周知，海藻的生化成分随种类和环境而变化。木耳是卡拉胶(凝胶和增粘多糖)的重要商业来源。本文研究了三种(棕色、绿色和淡黄色)可食用海藻的营养和矿物质组成。褐藻的灰分(25.99±0.22%)、粗纤维(21.0±0.68%)和蛋白质(8.92±0.41%)含量最高，绿藻的碳水化合物(22.0±0.00 %)和硫酸盐(5.89±0.00 %)含量最高。另一方面，浅黄色形态的脂肪含量最高(0.72±0.00 %)。在所分析的17种矿物中，总矿物质常量元素(即Na, K, Ca和Mg)以棕色形式记录(18.8±0.71 g/100 g d wt)，其次是淡黄色形式(17.3±1.07 g/100 g d wt)和绿色形式(11.9±1.22 g/100 g d wt)。微量元素在三种颜色形式中有所不同;而棕色形态的微量元素(P、Cd、Pb、As、Hg、Cr、Zn、Cu、Fe、Mn、Co、Mo和Ni)含量最高;19.96±0.24mg/100 g d wt)，其次是绿色(8.6±0.64 mg/100 g d wt)和淡黄色(7.15±0.58mg /100 g d wt)。在此研究的基础上，可以说这三种颜色形式(即:(褐色、绿色和淡黄色)可作为杂食性食物的调味品;然而，建议每天摄入5.68 g d wt的褐色形式，而对于绿色和淡黄色形式的最大每日摄入量分别为9.55 g和10.5 g d wt。该研究还揭示了三种颜色形式在营养和矿物质成分上的不同。
{"title":"Studies on nutritional composition of three colour forms of Kappaphycus alvarezii (Doty) Doty","authors":"Doty, K. Kumar, Sushma Kumaria, P. V. Raob","doi":"10.56042/ijms.v51i01.45173","DOIUrl":"https://doi.org/10.56042/ijms.v51i01.45173","url":null,"abstract":"Biochemical composition of seaweeds is known to vary with species and environment. Kappaphycus alvarezii is an important commercial source of carrageenans (gel-forming and viscosifying polysaccharides). The nutritional and mineral composition of three (brown, green and pale yellow) colour forms of edible seaweed K. alvarezii is investigated in the current study. The brown colour form of this seaweed contained highest ash content of (25.99±0.22 %), crude fibre (21.0±0.68 %), and protein (8.92±0.41 %), while, the green form had highest carbohydrate (22.0±0.00 %) and sulphate (5.89±0.00 %) content. On the other hand, the pale yellow colour form had highest lipid content (0.72±0.00 %). Amongst the 17 minerals analyzed, highest total mineral macro-elements ( viz . Na, K, Ca and Mg) were recorded in the brown form (18.8±0.71 g/100 g d wt) followed by the pale yellow (17.3±1.07 g/100 g d wt) and green colour form (11.9±1.22 g/100 g d wt). The micro-elements varied within the three colour forms; however, the brown colour form had maximum micro-element content (P, Cd, Pb, As, Hg, Cr, Zn, Cu, Fe, Mn, Co, Mo and Ni; 19.96±0.24mg/100 g d wt), followed by green (8.6±0.64 mg /100 g d wt) and pale yellow form (7.15±0.58mg /100 g d wt). On the basis of this study, it could be said that these three colour forms ( i.e . brown, green and pale yellow) of Kappaphycus alvarezii could be utilized as a condiment in the omnivorous diet; however, a daily intake of 5.68 g d wt is recommended in case of the brown form, while in case of the green and pale yellow form a maximum daily intake of 9.55 and 10.5 g d wt, respectively is recommended. The study also reveals that the three colour-forms differed in their nutritional and mineral composition.","PeriodicalId":51062,"journal":{"name":"Indian Journal of Geo-Marine Sciences","volume":"74 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75682835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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