Optimization of an innovative hydrothermal processing on prebiotic properties of eucheuma denticulatum, a tropical red seaweed

Birdie Scott Padam and Chee Kiong Siew and Fook Yee Chye (2022) Optimization of an innovative hydrothermal processing on prebiotic properties of eucheuma denticulatum, a tropical red seaweed. In: INTERNATIONAL CONFERENCE ON FOOD SCIENCE AND NUTRITION 2022 ” Future Food: Emerging Trends, Health and Diversity”, 24th-25th August 2022., Online.

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Seaweed is a sustainable source of marine oligosaccharides potentially could be used as a prebiotic ingredient for the functional food development. The study aims to optimize the oligosaccharide preparation through thermal hydrolysis of an under-utilized red seaweed, Eucheuma denticulatum. Response Surface Methodology (RSM) applying the Box-Behnken Design (BBD) was used on three parameters including temperature (105ºC-135ºC), hydrolysis time (15-35 min) and sulfuric acid concentration (0.05-0.2M). Optimized fractions with good prebiotic activity were characterized using HPLC-SEC and FT-IR. Oligosaccharides fraction ED-F1 was shown to promote the growth of beneficial gut microbiota including Lactobacillus plantarum, L. casei, L. acidophilus, Bifidobacterium animalis and B. longum with the highest prebiotic activity score of 1.64±0.17. The optimization studies showed that hydrolysis time was the most significant parameter for the oligosaccharides yield. Optimal hydrolysis conditions for ED-F1 were 120ºC, 21 min, 0.12M H2SO4 with the highest yield achieved (11.15 g/100 g of dry weight). Molecular weight of ED-F1 was determined at 1025 Da while FT-IR analysis revealed the presence of sulfated oligosaccharides with similar characteristics of i-carrageenan. These findings signify the innovative method for the efficient production of seaweed derived prebiotic oligosaccharides, which could be a promising source of functional food ingredients for the development of health foods and beverages.

Item Type: Conference or Workshop Item (Paper)
Keyword: Optimization , Lactobacillus , Bifidobacterium , Eucheuma denticulatum , Seaweed oligosaccharide
Subjects: H Social Sciences > HD Industries. Land use. Labor > HD28-9999 Industries. Land use. Labor > HD9000-9999 Special industries and trades > HD9000-9495 Agricultural industries
Q Science > QR Microbiology > QR1-502 Microbiology > QR75-99.5 Bacteria
Department: FACULTY > Faculty of Food Science and Nutrition
Date Deposited: 04 Apr 2023 15:36
Last Modified: 22 May 2023 10:51
URI: https://eprints.ums.edu.my/id/eprint/35268

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