Journal
FOOD CHEMISTRY
Volume 367, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2021.130755
Keywords
Ediblebird's nest; Extraction; Glycoconjugates; N-acetylneuraminic acid; Neuraminidase; Sialic acid
Funding
- Ministry of Science, Technology and Innovation (MOSTI), Malaysia [IF0119A1053]
- Ministry of Higher Education (MOHE), Malaysia [KKP/2020/UKM-UKM/5/1, JPT(BKPI)1000/016/018/25 (21)]
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Sialic acids, a group of alpha-keto acids with nine carbons, exist in over 50 forms, with sources ranging from edible bird's nests to enzymatic extraction. Recognized for its bioactivities, sialic acid can be utilized as a functional ingredient across various industries.
Sialic acids are a group of nine-carbon alpha-keto acids. Sialic acid exists in more than 50 forms, with the natural types discovered as N-acetylneuraminic acid (Neu5Ac), deaminoneuraminic acid (2-keto-3-deoxy-nonulononic acid or Kdn), and N-glycolylneuraminic acid (Neu5Gc). Sialic acid level varies depending on the source, where edible bird's nest (EBN), predominantly Neu5Ac, is among the major sources of sialic acid. Due to its high nutritive value and complexity, sialic acid has been studied extensively through acid, aqueous, and enzymatic extraction. Although detection by chromatographic methods or mass spectrometry is common, the isolation and recovery work remained limited. Sialic acid is well-recognised for its bioactivities, including brain and cognition development, immune-enhancing, anti-hypertensive, anticancer, and skin whitening properties. Therefore, sialic acid can be used as a functional ingredient in the various industries. This paper reviews the current trend in the biochemistry, sources, extraction, and functions of sialic acids with special reference to EBN.
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