Council of Scientific and Industrial Research
Designation: Emeritus Scientist
Phone No: 2567760
Phone Ext. No: 6170
E-Mail: aks[at]csmcri.res.in
Project Leader of : In-house project "Functional modification of seaweed polysaccharides"; Miniistry of Earth Sciences funded project "Drugs from the Sea"
Organic Chemistry - Natural Products, Seaweed Polysaccharides and Gels
CURRICULUM VITAE
Arup Kumar SiddhantaDate of Birth: March 30, 1954 Present Position and Address: Scientist-F; Group Leader – Natural Products Chemistry Group Marine Biotechnology & Ecology Discipline Central Salt & Marine Chemicals Research Institute (CSMCRI) Council of Scientific & Industrial Research (CSIR) Bhavnagar 364 002, Gujarat, India. Phone:91-278-2567760 (Work); Mobile:91-9825189117; Fax:91-278-2567562 (Work)
E-mail: aks@csmcri.org; siddhantaarupk@rediffmail.com ; Website: www.csmcri.org
Education (Post-Graduation onwards)
S.No.
Institution
Degree
Year
Award/Prize/
Certificate
1
Calcutta University
Calcutta
Ph.D.
"Studies on heterocycles and organometallic compounds"
1981
UGC-JRF (1975-1979); CSIR-SRF (1979-1980)
2
Calcutta University
Calcutta
M.Sc. (Chemistry)
1974
---
Area of Specialisation : Organic Chemistry, Natural products chemistry; Bioactive compounds; Functional modification of seaweed polysaccharides; Polymers; Gels
Professional Experience:
· Visiting Scientist (DFG, Germany), Physical Chemistry I, University of Bayreuth, Bayreuth,
Germany, 2003 (July-September) [with Professor Heinz Hoffmann].
· Post-doctoral Research Associate, Divn. of Medicinal Chemistry, Coll. of Pharmacy,
University of Texas, Austin, Texas, U S A, 1984-85 [with Dr David E Thurston].
· Robert A Welch Fellow, Chemistry Laboratory, Dept of Mol.Genetics, University of Texas Health Science Centre, Dallas, Texas, U S A, 1983-84 [with Professor J R Falck].
· Post-doctoral Research Assistant SERC, UK), Chemistry Department, Glasgow University, Glasgow, Scotland, U K, 1980-83 [with Professor Brian Capon].
· Research Fellow (CSIR, New Delhi), Chemistry Department, Calcutta University, Calcutta, 1978-80 [with Professor Avijit Banerji].
· Research Fellow (UGC), Chemistry Dept., Calcutta University, Calcutta, 1975-78 [with Professor Avijit Banerji].
Employment History:
· Scientist F, Marine Biotechnology and Ecology Discipline, CSMCRI, Bhavnagar; 2007-present.
· Scientist EII, Marine Biotechnology and Ecology Discipline, CSMCRI, Bhavnagar; 2002-2007.
· Scientist EI, Marine Algae and Marine Environment Discipline, CSMCRI, Bhavnagar; 1997-2002.
· Scientist C, Marine Algae Discipline, CSMCRI, Bhavnagar; 1992-1997.
· Scientist B, Marine Algae Discipline, CSMCRI, Bhavnagar; 1988-1992.
· Scientific Pool Officer, Marine Algae Discipline, CSMCRI, Bhavnagar; 1986-1988.
Invited Talks: Delivered invited talks in India and Germany in Symposia and University Departments
Ph.D. thesis examiner: Bhavnagar University, Madras University, Osmania University, Hyderabad; Calcutta University, Kolkata.
Reviewer: Review papers for various refereed journals including those of NISCOM, CSIR, New Delhi, Polymer journals of Wiley Interscience and Wiley-VCH Verlag GmbH & Co. KGaA; Natural Product Communications.
Ph D Students: Five received Ph D; Two registered for PhD degree; 7 Students are currently working for PhD degrees; One did MSc Dissertation, under my supervision.
Publications:
· Research Papers: 57; Published a number of papers in prestigious journals (Acc Chem Res, J Org Chem, Tetrahedron Letters, Biophys Bichem Acta, Lipids, Org Magnetic Reson, Phytochemistry, Botanica Marina, Int J Biol Macromol, J Phycology; J Applied Phycology; Polymer Journal (Japan); J Appl Polym Science; Polymer International, Food Hydrocolloids, Carbohydrate Polymers, Green Chemistry, J Polymer Materials, J Materials Science, Bioresource Technology, Indian J Exp Biol, Indian J Marine Sci, Separation Science and Technology; Indian J Chemistry A & B; J Indian Chemical Soc) in the areas of natural products chemistry of terrestrial plant, marine algae/seaweeds, animal (mammal), functional modification of seaweed polysaccharides, hydrogels, enols and analytical chemistry.
· Patents – Co-inventor in four patents: One USP 6,893,479; dated May 17, 2005; One US Patent US Patent No. US 7067568 B1; June 27, 2006; One US Patent (US Patent Publication No. US 2005/0267296 A1) pregrant application published on December 1, 2005; one filed (September 2008).
Technology Transfers:
(i) One patented technology "Integrated method for production of carrageenan and liquid fertilizer from fresh seaweeds" (USP 6,893,479) transferred to M/s Pepsico India Holdings Ltd. during 2005-2006.
(ii) The technology entitled "Cultivation of Gracilaria edulis and Extraction of Agar Therefrom" was transferred to M/s Community Enterprise Forum International, New Delhi, during 2006-2007. This technology is based on our patent entitled "A cost-effective process for preparing agarose from Gracilaria spp."(US 2005/0267296 A1; GB2429209).
(iii) Demonstration of know how transfer for Sargassum based LSF on a 5 kg seaweeds batch in the pilot plant (March 26-28, 2008). The know how was transferred to M/s Jupiter Agriinputs Corporation, Vadodara.
(a) Ministry of Earth Sciences (MoES)-Drug Project: Principal Investigator (1990-
present)
(b) Functional modification of seaweed polysaccharides for preparing new gels and materials (2008-2011; In-house project)
(b) Value addition of seaweeds and seaweed polysaccharides: Project Leader (2005-2008; in-house project).
(e) Modification of seaweed polysaccharides for special effects: Project Leader (2002-2005; in-house project).
(f) DBT/In-house Project on seaweed polysaccharides- "Improvements in Cultivation of Agarophytes, Carrageenophytes and their Phycocolloid Extraction Procedures": Member of the team (2000-2004).
(c) Industry Project: Feasibility studies on the development of carrageenan-based hard capsule material: Project Leader (2007-2008)
(d) Industry Project:Development of seaweed polysaccharide-based soft gelatin capsule material: Project Leader (2004-2006)
HRD Experience: More than 40 students/research staff have carried out R&D works under my supervision, five of them received their PhD degree and one did his MSc Dissertation. Five students are working in projects under my supervision for their PhD degrees.
Arup Kumar Siddhanta, Ph.D.
Patents
1. Patent entitled "Integrated method for production of carrageenan and liquid fertilizer from fresh seaweeds". Karuppanan Eswaran, Pushpito Kumar Ghosh, Arup Kumar Siddhanta, Jinalal Shambhubhai Patolia, Chellaiah Periyasamy, Aditya Shantibhai Mehta, Kalpana Haresh Mody, Bharatkumar Kalidas Ramavat, Kamalesh Prasad, Mahesh Rameshchandra Rajyaguru, Singaram Kulandaivel Chennur Radhakrishna Reddy, Jayant Batukrai Pandya, Akhilesh Tewari.
2. Patent entitled "A cost-effective process for preparing agarose from Gracilaria spp". Arup Kumar Siddhanta, Ramavatar Meena, Kamalesh Prasad, Bharatkumar Kalidas Ramavat, Pushpito Kumar Ghosh, Karuppanan Eswaran, Sangaiya Thiruppathi, Vaibhav Ajit Mantri.
3. Patent entitled "Process of preparation of biodegradable films from semi refined kappa carrageenan. Pushpito Kumar Ghosh, Arup Kumar Siddhanta, Kamalesh Prasad, Ramavatar Meena, Amit Bhattacharya.
4. A US and PCT patent application with full specifications entitled "Improved process for the preparation of agarose polymer from seaweed extractive" (Ramavatar Meena, Kamalesh Prasad, Arup Kumar Siddhanta, Pushpito Kumar Ghosh, Gaurav Mehta, Bhartkumar Kalidas Ramavat, Meenakshi Sundaram Ganesan, Bhavanath Jha, Avinash Mishra, Mahesh Ramniklal Gandhi, Pradeep Kumar Agarwal, Karuppanan Eswaran). Sent to CSIR for filing on September 23, 2008.
Technology Transfers
(i) One patented technology "Integrated method for production of carrageenan and liquid fertilizer from fresh seaweeds" (USP 6,893,479) transferred to M/s Pepsico India Holdings Ltd. during 2005-2006.
(ii) The technology entitled "Cultivation of Gracilaria edulis and Extraction of Agar Therefrom" was transferred to M/s Community Enterprise Forum International, New Delhi, during 2006-2007. This technology is based on our patent entitled "A cost-effective process for preaparing agarose from Gracilaria spp." (US 2005/0267296 A1; GB2429209).
(iii) Demonstration of know how transfer for Sargassum based LSF on a 5 kg seaweeds batch in the pilot plant (March 26-28, 2008). The know how was transferred to M/s Jupiter Agriinputs Corporation, Vadodara.
Dissertations Guided
Ph D Dissertations
(i) Mr M Shanmugam was awarded Ph.D. degree in Chemistry of Bhavnagar University in December 1998, for his thesis entitled Studies on the Biomedically and Industrially Important Metabolites of Indian Marine Algae, [Guide : Dr A K Siddhanta].
(ii) Mr A Sai Krishna Murthy was awarded Ph D degree in Chemistry of Bhavnagar University in November 2000, for his thesis entitled Chemical investigation of Indian marine algae with special reference to water soluble metabolites [Guide : Dr A K Siddhanta].
(iii) Mr A M Goswami was awarded Ph D degree in Chemistry of Bhavnagar University in January 2001, for his thesis entitled Chemical studies on the metabolites of Indian marine algae [Guide : Dr A K Siddhanta].
(iv) Mr Kamalesh Prasad, Scientist C, was awarded Ph D degree in Chemistry of Bhavnagar University in December 2005, for his thesis entitled Chemical and Rheological Characterization of Seaweed Polysaccharides [Guide: Dr A K Siddhanta].
(v) Mr Ramavatar Meena, Scientist C, was awarded Ph D degree in Chemistry of Bhavnagar University in December 2007, for his thesis entitled Chemical Studies on the Polysaccharides of Indian Seaweeds with Special Reference to Agar [Guide: Dr A K Siddhanta].
M Sc Dissertation
(i) Mr Deepak Kumar Sinha carried out project work (January-June 2004) of M Sc (Biotechnology) Semester IV Course of Tilkamanjhi Bhagalpur University and submitted a dissertation in June 2004, entitled DNA Characterization of the Red Seaweed Eucheuma cottonii & Chemical Investigation of Seaweed Polysaccharides (e.g. Agar & Carrageenan).
(Guide: Dr A K Siddhanta; Co-guide : Dr C R K Reddy).
Arup Kumar Siddhanta, Ph.D.
PUBLICATIONS
Research Papers
1. Banerji, A.; Ray, R.; Siddhanta, A. and Pal, S., "Constituents of Piper sylvaticum and Piper aurantiacum". Indian J. Chem. 17B: 538, 1979.
2. Banerji, A.; Siddhanta, A.K.; Acharya, A.K. and Dutta, C.P., "Carbon-13 NMR Spectroscopy of Kawa-pyrones". Org. Mag. Reson. 13: 345-48, 1980.
3. Banerji, A. and Siddhanta, A.K., "Studies on Kawa-pyrones: Synthesis of 5,6- Dehydrokawain". Current Science (India), 49, 845-47, 1980.
4. Banerji, A. and Siddhanta, A.K., "Schloraine: An Indole Alkaloid of Alstonia scholaris". Phytochemistry, 20: 540-42, 1981 [IF 2.322].
5. Banerji, A. and Siddhanta, A.K., "3,4-Bond Cleavage of Tetrahydro--carboline Alkaloids: Transformation of Venenatine and Rhazine to the 2-Acylindole Derivatives". J. Indian Chem. Soc. 59: 542-47, 1982.
6. Banerji, A.; Siddhanta, A.K. and Ghosal, T., "Metal Reagents in organic reactions: Part III - 1,2-Diamination of Styrene Utilizing Amino-mercuration Reaction". Indian J. Chem. 21B:464-66, 1982.
7. Capon, B. and Siddhanta, A.K., "The Stereochemistry of Simple Enols in Solution". Tet. Lett. 23: 3199-3202, 1982.
8. Falck, J.R.; Manna, S.; Siddhanta, A.K.; Capdevila, J. and Buynak, J.D., "Transformation of 15-HETE to 14,15-Dihydroxyeicosatrienotic acid and 11,14,15- and 13,14,15-trihydroxyeicosatrienoic acid". Tet. Lett., 24: 5715-5718, 1983.
9. Capon, B. and Siddhanta, A.K., "Simple Enols 3. The Stereochemistry of Simple Enols in Solution". J. Org. Chem., 49: 255-257, 1984.
10. Falck, J.R.; Siddhanta, A.K.; Estabrook, R.W.; Capdevila, J. and Mioskowski, C., "5- and 8-HETE Production by Rat Hepatic Microsomal Cytochrome P-450". Tet. Lett., 25: 1457-1458, 1984.
11. Banerji, A.; Bondopadhyay, D.; Sarkar, M.; Siddhanta, A.K.; Pal, S.C.; Ghosh, S.; Abraham, D. and Shoolery, J.N., "Structural and Synthetic Studies on the Retrofractamides - Amide Constituents of Piper retrofractum". Phytochemistry, 24: 279-284, 1985.
12. Capon, B.; Siddhanta, A.K. and Zucco, C., "Simple Enols 4. The Generation of Some New Simple Enols in Solution and the Kinetics and Mechanisms of Their Ketonization". J. Org. Chem. 50: 3580-3584, 1985.
13. Falck, J.R.; Manna, S.; Viala, J.; Siddhanta, A.K.; Moustakis, C.A. and Capdevila J., "Arachidonate Epoxygenase: Inhibitors and Metabolite Analogues". Tet. Lett. 26: 2287- 2290, 1985.
14. Toto, R.; Siddhanta, A.K.; Manna, S.; Pramanik, B.; Falck, J.R. and Capdevila, J., "Arachidonic Acid Expoxygenase: Detection of Epoxyeicosatrienoic Acids in Human Urine". Biochim. Biophys. Acta, Lipids and Lipid Metabolism, 919: 132-139, 1987 [IF 2.371].
15. Falck, J.R.; Schueler, V.J.; Jacobson, H.R.; Siddhanta, A.K.; Pramanik, B. and Capdevila, J., "Arichidonate Epoxygenase: Identification of Epoxyeicosatrienoic Acids in Rabbit Kidney". J. Lipid Res. 28: 840-846, 1987 [IF 3.893].
16. Banerji, A.; Bandyopadhyay, D. and Siddhanta, A.K., "Synthesis of Retrofractamide A". Phytochemistry, 26: 3345-3346, 1987.
17. Capon B.; Guo, B.; Kwok, F.C.; Siddhanta, A.K. and Zucco, C., "The Generation of Simple Enols in Solution". Acc. Chem. Res. 21: 135-140, 1988 [IF 16.214].
18. Siddhanta*, A.K.; Ramavat, B.K.; Chauhan, V.D.; Achari, B.; Dutta, P.K. and Pakrashi, S.C., "Sulphonoglycolipid from the Green Alga Enteromorpha flexuosa (Wulf.) J.Ag." Botanica Marina 34 (4): 365-367, 1991.
19. Sen, A.K. Sr., Das, A.K., Banerji, N., Siddhanta*, A.K., Mody, K.H., Ramavat, B.K., Chauhan, V.D., Vedasiromoni, J.R. and Ganguly, D.K., " A new sulphated polysaccharide with potent blood-anticoagulant activity from the red seaweed Grateloupia indica". Int.J.Biol. Macromol., 16(5): 279-280, 1994.
20. Siddhanta*, A.K.; Mody, K.H.; Ramavat, B.K.; Chauhan, V.D.; Garg, H.S.; and Sharma, M., "Characterization of Sulphonoglycolipid from the Red Alga Laurencia pedicularioides". Botanica Marina 38:329-331, 1995.
21. Siddhanta*, A.K., Mody, K.H., Ramavat, B.K., Chauhan, V.D., Garg, H.S., Goel, A.K., Jinandra Doss, M., Srivastava, M.N., Patnaik, G.K. and Kamboj, V.P., Bioactivity of marine organisms: Part VIII - Screening of some marine flora of western coast of India. Indian Journal of Experimental Biology 35:638-643, 1997.
22. Siddhanta*, A.K., Shanmugam, M., Ramavat, B.K. and Mody, K.H., Agar from Gracilaria dura of the west coast of India. Seaweed Research and Utilisation 19 (1&2):95-99, 1997.
23. Siddhanta*, A.K., A.M. Goswami, M. Shanmugam, K.H. Mody, B.K. Ramavat and O.P. Mairh. Studies on sulphated polysaccharides of Laurencia species of the west coast of India, In : Recent Trends in Algal Research (Ed. G. Subba Rangaiah); Department of Botany, Andhra University, Visakhapatnam, Andhra University Publications; pp. 91-98; 1999.
24. Mody, K.H., Sai Krishnamurthy, A., Siddhanta*, A.K., Ramavat, B.K. and Mairh, O.P., Investigation on the sulphated polysaccharides of Sargassum cinctum of Saurashtra coast, In : Recent Trends in Algal Research (Ed. G. Subba Rangaiah); Department of Botany, Andhra University, Visakhapatnam, Andhra University Publications; pp. 83-90; 1999.
25. Siddhanta*, A.K., Shanmugam, M., Mody, K.H., Goswami, A.M. and Ramavat, B.K. Sulphated polysaccharides of Codium dwarkense Boergs. from the west coast of India : Chemical composition and blood anticoagulant activity. International J. Biol. Macromol. 26:151-154, 1999.
26. Shanmugam, M., Mody, K. H. and Siddhanta*, A. K.. Blood anticoagulant sulphated polysaccharides of the marine green algae Codium dwarkense (Boergs.) and C. tomentosum (Huds.) Stackh. Indian Journal of Experimental Biology 39:365-370, 2001.
27. Siddhanta*, A.K., Goswami, A.M., Ramavat, B.K., Mody, K.H. & Mairh, O.P. Water soluble polysaccharides of marine algal species Ulva (Ulvales, Chlorophyta) of Indian waters. Indian Journal of Marine Sciences 30 :166-172, 2001.
28. Shanmugam, M., Mody, K.H. Ramavat, B.K., Sai Krishna Murthy, A. and Siddhanta*, A.K. Screening of Codiacean algae (Chlorophyta) of the Indian coasts for blood anticoagulant activity. Indian Journal of Marine Sciences 31:33-38, 2002.
29. Siddhanta*, A.K., Shanmugam, M., Goswami, A. M., Mody, K.H. and Ramavat, B.K. Sterols from marine green algae of Indian waters. Journal of Indian Chemical Society 79 : 294-297, 2002.
30. Siddhanta*, A.K., Goswami, A. M., Shanmugam, M., Mody, K. H., Ramavat, B. K. and Mairh, O. P. Sulphated galactans of marine red alga Laurencia spp. (Rhodomelaceae, Rhodophyta) from the west coast of India. Indian Journal of Marine Sciences 31 (4) : 305-309, 2002.
31. Siddhanta*, A.K., Goswami, A. M., Ramavat, B. K. and Achari, B. Nitrogenous glycerolipids from Ulva fasciata (Ulvaceae, Chlorophyta) of West Coast of India. J Indian Chem Soc 79: 843-845, 2002.
32. Shahi, V.K*., Thampy, S.K., Siddhanta, A.K. and Rangarajan, R. Separation of sodium sulfate and p-toluene sulfonic acid by electrodialysis. Separation Science and Technology 37(14) : 3273-3289, 2002.
33. A K Sen, Sr.*, A K Das, K K Sarkar, A K Siddhanta, R Takano, K Kamei and S Hara. An agaroid-carrageenan hybrid type backbone structure for the antithrombic sulfated polysaccharide from Grateloupia indica Boergensen (Halymeniales, Rhodophyta). Botanica Marina 45 :331-338, 2002 [IF 0.976].
34. CRK Reddy*, G Raja Krishna Kumar, K Eswaran, A K Siddhanta and A Tewari. In vitro somatic embryogenesis and regeneration of somatic embryos from pigmented callus of Kappaphycus alvarezii (Doty) Doty (Rhodophyta, Gigartinales)". Journal of Phycology 39 (3) :610-616, 2003.
35. Kamalesh Prasad, A. K. Siddhanta*, A. K. Rakshit, Amit Bhattacharya and Pushpito K. Ghosh*. On the properties of agar gel containing ionic and non-ionic surfactants. International Journal of Biological Macromolecules 35:135-144, 2005 [IF 1.578].
36. Kamalesh Prasad, Keyur Trivedi, Ramavatar Meena, A. K. Siddhanta*. Physical modification of agar: Formation of agar-fatty acid complex. Polymer Journal 37(11): 826-832, 2005 [IF 1.421].
37. K. Prasad, K. Trivedi, A. K. Siddhanta and A. Bhattacharya. Surface tension studies of polymer-surfactant solutions: I. Agar-CTAB. Indian J Chem 44A:2445-2449, 2005.
38. Kamalesh Prasad, Ramavatar Meena and A.K Siddhanta*. Microwave induced rapid one-pot synthesis of k-carrageenan-g-PMMA copolymer by potassium persulphate initiating system. J Appl Polymer Science 101:161-166, 2006 [IF 1.008].
39. Meena R., Prasad, K. and Siddhanta*, A.K. 2006. Studies on "sugar reactivity" of agars extracted from some Indian agarophytes. Food Hydrocolloids 20:1206-1215, 2006 [IF 2.492].
40. Kamalesh Prasad, Gaurav Mehta, Ramavatar Meena, A.K. Siddhanta*. Hydrogel forming agar-graft-PVP and k-carrageenan-graft-PVP blends: Rapid synthesis and characterization. J Appl Polymer Science 102:3654-3663, 2006 [IF 1.008].
41. Prasad, Kamalesh, Goswami, A.M, Meena, Ramavatar, Ramavat, B.K., Ghosh, Pushpito K. and Siddhanta*, A.K. Superior quality agar from Gelidiella acerosa (Forsskal) J. Feldmann & G. Hamel (Rhodophyta, Gelidiales) of the west coast of India: An evaluation. Ind J Mar Sci 35:268-274, 2006 [IF 0.302].
42. Meena, Ramavatar, Prasad, Kamalesh, Mehta, Gaurav and Siddhanta*, A. K. Synthesis of the copolymer hydrogel k-carrageenan-graft-PAAm : Evaluation of its absorbent and adhesive properties. J Appl Polymer Science 102, 5144-5152, 2006 [IF 1.008].
43. Ramavatar Meena, Kamalesh Prasad, A. K. Siddhanta*. Preparation of genipin-fixed agarose hydrogel. J Applied Polymer Science 104:290-296, 2007 [IF 1.008].
44. Kamalesh Prasad, A K Siddhanta*, M Ganesan, B K Ramavat, B. Jha and P K Ghosh. Agars of Gelidiella acerosa (Forsskal) J. Feldmann & G. Hamel (Rhodophyta, Gelidiales) of west and southeast coasts of India. Bioresource Technology 98:1907-1915, 2007 [doi:10.1016/j.biortech.2006.07.028] [IF 3.103].
45. Ramavatar Meena, A.K. Siddhanta*, Kamalesh Prasad, B. K. Ramavat, K. Eswaran, S. Thiruppathi, M. Ganesan, Vaibhav A. Mantri and P V Subba Rao. Preparation, characterization and benchmarking of agarose from Gracilaria dura of Indian waters. Carbohydrate Polymers 69:179-188, 2007 [30-3-2007; doi:10.1016/j.carbpol.2006.09.020] [IF 1.782].
46. Ramavatar Meena, Kamalesh Prasad, A. K. Siddhanta*. Effect of genipin, a naturally occurring crosslinker on the properties of kappa-carrageenan. Int J of Biological Macromolecules 41(1):94-101, 2007 [doi:10.1016/j.ijbiomac.2007.01.008] [IF 1.578].
47. S. Santinath Singh, A. K. Siddhanta, Ramavatar Meena, Kamalesh Prasad, S. Bandyopadhyay and H. B. Bohidar*. Intermolecular Complexation and Phase Separation in Aqueous Solutions of Oppositely Charged Biopolymers. Int J Biological Macromolecules 41:185-192, 2007 [doi: 10.1016/j.ijbiomac.2007.02.004] [IF 1.578].
48. Ramavatar Meena, Kamalesh Prasad, Mahesh Chhatbar, A K Siddhanta*. Development of a robust hydrogel system based on agar and sodium alginate blend. Polymer International 57: 329-336, 2008.
49. Ramavatar Meena, Kamalesh Prasad, M Ganesan and A K Siddhanta*. Superior quality agar from Gracilaria species (Gracilariales, Rhodophyta) collected from Gulf of Mannar, India. J Appl Phycol 20:397-402, 2008 [DOI 10.1007/s10811-007-9272-6] [IF 0.788].
50. Kamalesh Prasad*, Ramavatar Meena, A K Siddhanta*. A new approach to functionalize agar and κ-carrageenan based thin films with improved barrier properties. J Polymer Materials 25 (3):373-380, 2008 [IF 0.373].
51. Kamalesh Prasad*, P Bahadur, Ramavatar Meena and A K Siddhanta. Facile solvent free synthesis of polymerised sucrose functionalised polyoxyethylene (23) lauryl ether by microwave irradiation. Green Chemistry; 10:1288-1293, 2008 [DOI:10.1039/b810514f] [IF 4.836].
52. Ramavatar Meena, Kamalesh Prasad, A K Siddhanta*. Development of a stable hydrogelnetwork based on agar-kappa-carrageenan blend cross-linked with genipin. Food Hydrocolloids 23 (2): 497-509, 2009 (Published online; March 25, 2008) [doi:10.1016/j.foodhyd.2008.03.008] [IF 2.492].
53. Mahesh Chhatbar, Ramavatar Meena*, Kamalesh Prasad and A K Siddhanta*. Microwave assisted rapid method for hydrolysis of sodium alginate for M/G ratio determination. Carbohydrate Polymers 76: 650-656, 2009 [doi:10.1016/j.carbpol.2008.11.033] [IF 2.64].
54. Gayatri Prasad, Kamalesh Prasad, Ramavatar Meena and A K Siddhanta*. Facile preparation of Chaetomorpha antennina based porous polysaccharide-PMMA hybrid material by radical polymerization under microwave irradiation. J Materials Science 44(15): 4062-4068, 2009 (Online June 15, 2009; DOI: 10.1007/s10853-009-3586-5) [IF 1.081].
55. Mahesh U Chhatbar, Ramavatar Meena, Kamalesh Prasad and A.K. Siddhanta*. Agar/sodium alginate-graft-polyacrylonitrile, a stable hydrogel system. Indian J Chem 48A:1085-1090, 2009 [IF=0.60].
56. A K Siddhanta*, Kamalesh Prasad; Ramavatar Meena; Gayatri Prasad; Gaurav K Mehta; Mahesh U Chhatbar; Mihir D Oza; Sanjay Kumar; Naresh Sanandiya. Profiling of cellulose content in Indian seaweed species. Bioresource Technology 100: 6669-6673, 2009 [doi:10.1016/j.biortech.2009.07.047] [IF=4.5].
57. Gaurav K Mehta, Ramavatar Meena, Kamalesh Prasad, M Ganesan, A K Siddhanta*. Preparation of galactans from Gracilaria debilis and Gracilaria salicornia (Gracilariales, Rhodophyta) of Indian waters. J Appl Phycol (In press; January 4, 2010; DOI: 10.1007/s10811-010-9502-1) [IF=1.2].
Book Chapters
1. Siddhanta, A.K.*, Meena, R., Prasad, G., Chhatbar, M.U., Mehta, G.K., Oza, M.D., Kumar, S., Prasad, K. Development of carbohydrate polymer based new hydrogel materials derived from seaweed polysaccharides in "Handbook of Carbohydrate Polymers: Development, Properties and Applications" Ito, Ryouichi and Matsuo, Youta (Eds), Chapter 15. Series: Polymer Science and Technology 2010. ISBN: 978-1-60876-367-2. NOVA Science Publishers Inc., New York, April 2009 (In press).
2. Ramavatar Meena and A K Siddhanta*. Agar and Value Addition of Indian Agarophytes. In the monograph on "Recent Advances on Applied Aspects of Indian Marine Algae with Reference to Global Scenario", Vol. 2 (A Tewari, Ed.), 2006; pp.172-184, CSMCRI Bhavnagar.
3. A K Siddhanta*, Ramavatar Meena, Kamalesh Prasad and A Sai Krishna Murthy. Seaweed polysaccharides, their bioactivity and value addition – the Indian perspective. In the monograph on Agar and Value Addition of Indian Agarophytes. In the monograph on "Recent Advances on Applied Aspects of Indian Marine Algae with Reference to Global Scenario", Vol. 2 (A Tewari, Ed.), 2006; pp.229-243, CSMCRI, Bhavnagar.
Review Articles
1. Siddhanta, A K. Chemical investigation and value addition of seaweeds. Indian Hydrobiology7 (Supplement):29-34; July 2005.
2. Siddhanta*, A.K., Goswami, A.M. and Sai Krishna Murthy, A. Bioactive compounds from marine algae. Drugs and Pharmaceuticals: Current R&D Highlights 23: 21-25, 2000 (Publisher : NICDP, CDRI, Lucknow; published in April 2001).
3. Siddhanta*, A.K. and Sai Krishna Murthy, A. Bioactive polysaccharides from marine brown algae (Phaeophyceae). Journal of Indian Chemical Society 78:431-437, 2001.
4. Siddhanta*, A.K. and M. Shanmugam, Metabolites of Tropical Marine Algae of the Family Codiaceae (Chlorophyta) : Chemistry and Bioactivity. Journal of Ind. Chem. Soc. 76 : 323-334; 1999.
5. Siddhanta*, A.K.; Ramavat, B.K.; Mody, K. and Chauhan, V.D., "Biomedical Potential of Marine Algae". Seaweed Research and Utilization 15 (1&2): 149-157, 1992.
General Articles
1. Chauhan, V.D.; Siddhanta*, A.K., "Samudri Shabaal Ke Ousodhiya Upyoga (Medicinal Application of Marine Algae)". In: Samudri Sansadhano Se Ousodhiyaa (Drugs from the Sea). Eds. S.A.H.Abidi, B.N.Dhawan, H.S.Garg, G.Mantri, K.R. Sharma).Mahasagar Vikas Vibhag, Bharat Sarkar (Department of Ocean Development,Government of India), New Delhi, 1992, p. 49-54.
2. Siddhanta*, A.K., Mody, K.H., Ramavat, B.K. and Chauhan, V.D., "Bharatiya Samudri Shaibaal se Upalabddha Jaibasakriya Yogikon ka Addhayana ( Studies on the bioactive compounds of Indian marine algae)". In: Mahasagariya Sansadhana (Investigation on Ocean) (Eds. S.A.H. Abidi, J.B.R. Prasadrao, B.N. Dhawan, P. Natarajan, R.N. Vohra, Ms. Rakesh Sharma). Mahasagar Vikas Vibhag, Bharat Sarkar (Department of Ocean Development, Government of India), New Delhi, p.217-224, 1994.
3. Natarajan, P. and Siddhanta*, A. K., Marine algae - Their chemistry and utilization. In:Souvenir of published by the Seaweed Research and Utilization Association on the occasion of the Silver Jubilee Celebrations during September 2-6, 1994; pp.34-36.
4. Siddhanta*, A.K., Marine algal polysaccharides - Functions and utilisation. In : Trends in Carbohydrate Chemistry (Ed. P.L. Soni). (IX Carbohydrate Conference, Lucknow, November 24-26, 1993). Surya International Publications, Dehra Dun - 248 001 (India), 1995; pp. 125-131.
5. Siddhanta*, A.K., Mairh, O.P. and Natarajan, P., Value added marine flora, In:Chemistry and Biology of Herbal Medicine (Eds. V P Agrawal and V P Kamboj). Society of Biosciences, Muzaffarnagar, India, 1997; pp. 163-174.
Abstracts
1. Falck J R, Schueler V J, Jacobson H R, Siddhanta A K, Pramanik B, Capdevila J. Detection of 8,9-Epoxyeicosatrienoic and 14,15-Epoxyeicosatrienoic Acids as Endogenous Components of Rabbit Kidney. Kidney International 31(1): 269-269, Jan 1987.
2. Toto R D, Falck J R, Siddhanta A K, Capdevila J. Epoxyeicosatrienoic Acids (EETs) In Human-Urine (Hu) - Detection Of 8,9-Regioisomers And 14,15-Regioisomers. Kidney International 31(1): 289-289, Jan 1987.