Browsing by Author "Setyowati, EP"

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    Marine resources with melanogenic regulatory properties: seagrass, seaweed, and marine sponges as anti-melanogenic agents
    (Open Science Publishers LLP, 2024-07) Utami, DT; Setyowati, EP; Murti, YB; Meiyanto, E
    Tyrosinase is a rate-limiting enzyme that is essential for the synthesis of melanin and controls pigmentation in the skin. The most common strategy in cosmeceutical products for skin lightening is the suppression of tyrosinase. Marine substances contain a variety of unique chemical compounds that have the potential to develop into new bioactive compounds as future medications for skin hyperpigmentation therapy. In this review, we summarize 55 compounds from marine resources that have been identified as active in inhibiting tyrosinase enzyme activity from research studies published up to April 2023. Those substances are classified to be very strong, strong, and moderate inhibit tyrosinase activity and melanin biosynthesis. Based on the IC50 value, there are 12 compounds that act as potential anti-melanogenic agents. 7-phloroeckol isolated from Ecklonia cava has the highest tyrosinase enzyme inhibitory activity with an IC50 value of 0.85 µM, while Arenarol isolated from Dysidea arenaria has the most active properties in reducing the synthesis of melanin with an IC50 value of <3 µM on B16 melanoma cells. We propose to present a new perspective on the discovery of metabolites from seagrasses, seaweeds, and marine sponges that can be applied as lead compounds in developing medications for anti-hyperpigmentation therapy through this review.
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    Promising sponge derived marine fungi as antibacterial and biofilm inhibitors
    (Open Science Publishers LLP, 2024-04) Wigati, D; Setyowati, EP; Pratiwi, SUT; Nugraha, AS
    Marine organisms, especially sponges, provide many sources of metabolites with various biological activities. Most sponges associate with microbes such as fungi. To solve the problem of sponge availability, it is necessary to isolate compounds from marine-derived fungi due to their feasibility and advantages. This study, thus, highlights that the most prominent genera to produce metabolites active as antibacterials and antibiofilm were Aspergillus, Penicillium, Neosartorya, and Trichoderma. The summarized data of isolated compounds related to antibacterial and antibiofilm activities until 2022 included anthraquinones, sterigmatocystin analogs, hydroxy pyrrolidine alkaloids, helvolic acid derivatives, lactones, prenylated phenylbutyrolactones, citrinin and derivatives, bisthiodiketopiperazine, cyclotetrapeptides, dihydrochromone dimers, amino lipopeptides, furan derivatives, aspiron-derivatives, halogenated metabolites, and alkaloids. Since the biofilm mechanism is very complex, some antibacterial compounds do not necessarily work as antibiofilms. Nevertheless, it can be concluded that compounds produced from sponge-associated fungi have the potential to be developed as new antibacterial and antibiofilm agents although still require further investigation related to the mechanism of actions of the compounds.