AIM: This study pursues to discover the cosmeceutical potential of two Malaysian algae, Sargassum sp. and Kappaphycus sp. by determining their antioxidant capacity and assessing the presence of their secondary metabolites with cosmeceutical potential using non-targeted metabolite profiling.
METHODS: Metabolite profiling using Quadrupole Time-of-Flight (Q-TOF) liquid chromatography-mass spectrometry (LC-MS) in the Electrospray Ionization (ESI) mode resulted in 110 putative metabolites in Sargassum sp. and 47 putative metabolites in Kappaphycus sp. and were grouped according to their functions. To the best of our knowledge, the bioactive compounds of both algae have not been studied in any great detail. This is the first report to explore their cosmeceutical potential.
RESULTS: Six antioxidants were detected in Sargassum sp., including fucoxanthin, (3S, 4R, 3'R)-4-Hydroxyalloxanthin, enzacamene N-stearoyl valine, 2-hydroxy-hexadecanoic acid, and metalloporphyrins. Meanwhile, three antioxidants detected in Kappahycus sp., namely Tanacetol A, 2-fluoro palmitic acid and idebenone metabolites. Three antioxidants are found in both algae species, namely, 3-tert-Butyl-5-methylcatechol, (-)-isoamijiol, and (6S)-dehydrovomifoliol. Anti-inflammatory metabolites such as 5(R)-HETE, protoverine, phytosphingosine, 4,5-Leukotriene-A4, and 5Z-octadecenoic acid were also found in both species. Sargassum sp. possesses higher antioxidant capacity as compared to Kappahycus sp. which may be linked to its number of antioxidant compounds found through LC-MS.
CONCLUSIONS: Hence, our results conclude that Malaysian Sargassum sp. and Kappaphycus sp. are potential natural cosmeceutical ingredients as we aim to produce algae cosmeceutical products using native algae.
METHODS: In this review, a total of 35 articles were selected using the Scopus database based on the inclusion and exclusion criteria RESULT: The significant correlation between total phenolic content, total flavonoid content, antioxidant activities, and sun protection factor were shown in these studies which confirmed the potential benefits of natural plants in sunscreen development.
CONCLUSIONS: In addition, natural botanical sources also exhibit excellent anti-tyrosinase, anti-aging, and anti-inflammatory activities. However, the biological activities of plants were dependent on the solvents used for extraction.
METHODS: The clinical data and scintigraphic findings of consecutive patients referred to the Department of Nuclear Medicine, HKL for GES from July 2020 to December 2020 were retrospectively reviewed.
RESULTS: Thirteen patients underwent the study (6 males and 7 females) with a mean age of 47.9 years (age range of 25 to 72 years). The majority of patients (n=11) were diagnosed with either type I or type II diabetes mellitus. Ten patients reported abnormal scan findings with only 3 patients had normal GES findings. Scintigraphic findings from our patients, association of symptoms with abnormal GES as well as the challenges in implementing GES in Malaysia is discussed.
CONCLUSION: GES provides valuable information to the referring physician in the diagnosis and management of patients with gastric motility disorders. However, its use is limited because of limited availability, cost restriction, lack of familiarity among clinicians, and lack of understanding of the test. Further effort is thus needed to enhance the availability and usage of GES in Malaysia.