Vol. 7, Issue 12, Part I (2025)

On screening the twenty species of marine macroalgae, collected from Gulf of Mannar, South east coast of India. This experiment was dealt to identify the promising marine macroalgae responsible to decrease methane emission among the collected twenty species of marine macroalgae by in vitro gas production technique. Further, the total gas production, methane production, per cent methane on total gas production, in vitro true dry matter digestibility and methane per 100 mg truly digested substrate were estimated by IVGPT. In the process of screening 20 marine macroalgae on methane production potential by IVGPT, Acanthophora spicifera, Hypnea musciformis and Valoniopsis pachynema were promising macroalgae species, significantly (P<0.01) reduced the total gas production, methane production, per cent methane on total gas production and methane production per 100mg of truly digested substrate.