Solar irradiation as an alternative bleaching process for agar extracted from Gracilariopsis heteroclada in Iloilo, Philippines
Share
စိတ္တဇ
The current industrial practice of using chemical bleach to achieve the pure white colour of agar is deleterious to both human and environmental health. This study evaluates the potential of solar irradiation as an alternative bleaching process for agar extracted from Gracilariopsis heteroclada in Iloilo, Philippines. The physico-chemical properties of agar obtained from alkaline-treated seaweed after exposure to different bleaching conditions (e.g. solar irradiation, hypochlorite solution, and ultraviolet and fluorescent lights) were examined and compared with commercial bacteriological agar. Photobleaching through solar irradiation produced agar with superior gel strength (1038.61 g cm−2), high 3,6-anhydrogalactose content (41.44%) and low total inorganic sulphate content (1.87%) without compromising agar yield (19.37%). Solar irradiation offers very promising results as a simple, low-cost, environmentally friendly alternative to the chlorine bleaching process for agar extraction.
Suggested Citation
Endoma, L. F., Nacional, L. M., & Luhan, M. R. J. (2019). Solar irradiation as an alternative bleaching process for agar extracted from Gracilariopsis heteroclada in Iloilo, Philippines. Botanica Marina , 62(6), 605-613. https://doi.org/10.1515/bot-2018-0120
ဘာသာရပ်
Taxonomic term
စုစည်းမှုများ စုစည်းမှုများ
- AQD Journal Articles [1229]
Related items
Showing items related by title, author, creator and subject.
-
Gracilaria studies at SEAFDEC/AQD
Hurtado-Ponce, Anicia Q. (Network of Aquaculture Centres in Asia-Pacific, 1996)Research in seaweed from 1988–1994 focused on the agar producing Gracilaria. Studies in the following areas were also conducted: inventory of the seaweed resources; production ecology; farming systems; and agar characterisation. ... -
Seaweeds: Utilization and product applications
Aldon, E. T. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1998)Seaweeds have been used as food, medicine, fertilizers, soil conditioner and source of salt. Realizing the potentials of seaweeds, research and development thrusts have been geared towards improving and developing its ... -
Village level processing techniques
Surtida, M. B. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1998)The agar-bearing seaweeds Gracilaria and Gelidium grow abundantly in the Asia-Pacific region. Production and post-harvest techniques and methods for processing Gracilaria to produce agar suitable for local market is necessary ...