Prasad Tharanga Jayasooriya

Rajarata University of Sri Lanka

The increasing demand for natural skin lightening agents has led to significant interest in researching plant-derived compounds with antityrosinase activity. The inadequate availability and poor quality of raw materials are major obstacles for manufacturers of herbal cosmetics. The present study aimed to investigate the antityrosinase activity and...

The medicinal properties of Schleichera oleosa (Lour.) Oken, commonly called "Kon", has been acknowledged and utilised in traditional medicine for its wide-ranging therapeutic effects. This study was carried out to determine the fatty acid content in S. oleosa seeds. Gas Chromatography-Mass Spectroscopy (GC-MS) was employed to identify and quantify...

The medicinal properties of Schleichera oleosa (Lour.) Oken, commonly called "Kon", have been acknowledged and utilized in traditional medicine for its wide-ranging therapeutic effects. This study was carried out to determine the fatty acid content in S. oleosa seeds. Gas Chromatography-Mass Spectroscopy (GC-MS) was employed to identify and quantif...

Phytochemical Screening, Antioxidant and Antidiabetic Activities of Different Solvent Extracts of Elaeocarpus serratus (Veralu) and Elaeocarpus angustifolius (Nilveralu) Grown in Sri Lanka

The novel bioactive compounds derived from plants have shown more efficacy in the management of type II diabetes. The dried fruit pericarp of Elaeocarpus serratus and Elaeocarpus angustifolius were extracted with methanol, hexane, ethyl acetate, and aqueous using sonication extraction. The antioxidant activities were determined through the DPPH and...

1. Abstract The dried fruit pericarp of Elaeocarpus serratus and Elaeocarpus angustifolius were extracted with methanol, hexane, ethyl acetate, and aqueous using sonication extraction. The antioxidant activities were determined through the DPPH and ABTS radical scavenging assays, ferric reducing power (FRAP), and oxygen radical absorbance capacity...

The novel bioactive compounds derived from plants have shown more efficacy on management of type II diabetes. The dried fruit pericarp of Elaeocarpus serratus and Elaeocarpus angustifolius were extracted with methanol, hexane, ethyl acetate, and aqueous using sonication extraction. The antioxidant activities were determined through the DPPH and ABT...

Sri Lanka is a tropical country, rich with naturally available diverse fruit crops. However, most of them remain underutilized especially, in terms of industrial uses, the bioactivity of these fruit plants' metabolites is largely unexplored and most of them are seasonal. Recently, the demand for cosmetics with natural ingredients has increased, as...

Cancer is a major public health concern, and there are no entirely effective treatments. Therefore, natural product-based alternative therapies have been suggested as effective therapeutics against cancer. Marine algae are a promising research tool considered a natural source of bioactive compounds embedded in marine ecology. Algae synthesize a vas...

Seaweeds are a promising therapeutic target in drug development and nutraceuticals due to the presence of structurally different bioactive constituents in their composition. Diabetes mellitus (DM) is a major metabolic disorder that causes impaired insulin secretion, insulin action by the pancreas, or both. Despite the currently available synthetic...

Seaweed is considered the most important marine bioresource within marine ecology, enriched with ideal bioactive components, including macro and micronutrients, vitamins, amino acids, proteins, phytohormones, minerals, lipids, carbohydrates, antimicrobial compounds, and osmoprotectants. Currently, seaweed is a potential candidate for the production...

Manika zapota is commonly known as sapodilla and is widely distributed throughout the country. Although availability is high, industrial applications are very rare. Therefore, there is a potential to introduce the value of consumption of this fruit. This study aimed to determine the antioxidant activities of the seeds and fruits of M. zapota. Diffe...

Passiflora foetida (Padagedi) is identified as an underutilized fruit in Sri Lanka, used in traditional medicine for several diseases. The objective of this study was to determine the antioxidant, anti-diabetic, and anti-inflammatory properties of the leaves and fruits of P. foetida. Methanol (100 %) was used to prepare the plant extracts. The anti...

Passiflora foetida (Padagedi) is identified as an underutilized fruit in Sri Lanka that is used in traditional medicine for several diseases. The objective of this study was to determine the antioxidant, anti-diabetic, and anti-inflammatory properties of the leaves and fruits of P. foetida. 100 % methanol was used to prepare the plant extracts. Ant...

Estimation of Phenolic content, Flavonoid content and antioxidant activities of selected underutilized fruits in Sri Lanka

The aim of this study was to evaluate the Total Phenolic Content (TPC), Total Flavonoid Content (TFC), and in vitro antioxidant activity, of six underutilized fruits in Sri Lanka. The selected fruits are Elaeocarpus angustifolius L (Ceylon blue olive), Elaeocarpus serratus L (Veralu), Manikara zapota L (Sapadilla), Ziziphus mauritiana L (Masan), Fl...

Marine biotechnology is a broad field with a profound and global sociological footprint. Within that sociological macrocosm, marine algae act as an emerging field of research that is exemplified by the superabundance of natural sources to harvest bioactive compounds. Algae synthesize a comprehensive array of bioactive compounds including polysa...

Chnoospora minima is a brown alga enriched with unique bioactive compounds which are ideal candidates for pharmaceutical, cosmeceutical and nutraceutical industries. During this study, C. minima was extracted using 80% methanol and de-polysaccharide crude methanol extract was obtained by ethanol precipitation followed by separation of the po...

Chnoospora minima is a brown algae enriched with unique bioactive compounds which are ideal candidates for pharmaceutical, cosmeceutical, and nutraceutical industries. During this study, C.minima were extracted using 80% methanol and de-polysaccharide crude methanol extract was obtained by ethanol precipitation followed by separation of the polysac...

Chnoospora minima is a brown alga that belonged to the group of Phaeophyceae, which exhibited different bioactivities including anti-cancer, anti-diabetic, anti-inflammatory, antioxidant, etc. The present study aimed to investigate the phytochemical composition of the de-polysaccharide and polysaccharide-rich methanolic extracts and their fracti...

Marine algae have been investigated as a part of the human diet for thousands of years. They have recently been used as raw materials in the production of a variety of seaweed-based foods due to their high nutritional content. Most of the marine algae can be utilized for human consumption, and they are referred to as "edible seaweeds". With the acc...