Studies on sporulation in some commercially important marine algae of Mandapam coast

Sukumaran, Soniya (2000) Studies on sporulation in some commercially important marine algae of Mandapam coast. PhD thesis, Central Institute of Fisheries Education, Versova.

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Abstract

Marine algae are macroscopIC plants constituting an important marine living renewable resource. They are used as human food, livestock feed and fertilizer for land plants in many parts of the world besides having the prime importance of being the only source for the production of agar, carrageenan and alginates. These phytochemicals are extensively used in various industries such as food , confectionery, textile, pharmaceutical, cosmetics, dairy, liquor, canning, paint, varnish, paper etc. mostly as gelling, stabilising and thickening agents and have an estimated billion dollar global market (Zilinskas and Lundin, 1993). A summary of sources, chemical composition, properties and important applications of these phytochemicals given by Nambisan (1998) is presented in Table 1. The commercial exploitation of seaweeds is going on since 1966 and the export of economically important seaweeds such as Gelidiella, Gracilaria and Sargassum was banned by the Govt. of India in 1975 as agar and algin industries were started in India by 1970. In recent years many industries producing these phytochemicals have come up in India but as yet the production do not meet the demand. The annual demands of raw materials by Indian seaweed based industries are 2000 tonnes and 12,000 tonnes (dry weight) of agarophytes and alginophytes respectively. Annually, about 60 tonnes of agar and 500 tonnes of alginates are produced. In India carrageenan is not yet produced. However its demand is nearly 200 tonnes per year. Since the indigenous production of agar and alginates is unable to meet the increasing demand, India is importing about 10-12 tonnes of pharmaceutical grade agar, 35 tonnes of algi nates and 140 tonnes of carrageenan costing foreign exchange of about Rs.10 crores (Zaidi et al., 1999) This is mainly due to the paucity of raw materials particularly agar yielding seaweeds.

Item Type:Thesis (PhD)
Supervisor(s):Kaliaperumal, N
Uncontrolled Keywords:sporulation; marine algae; Mandapam coast
Subjects:Theses
Algae
Divisions:CMFRI-Cochin > Fishery Environment
ID Code:7122
Deposited By:Geetha P Mrs
Deposited On:27 Jan 2011 14:44
Last Modified:27 Jan 2011 14:45

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