Artocarpus Odoratissimus Research Articles

English

The purpose of this study is to investigate and compare the phytochemical contents and antioxidant activity of 80% methanol extracts of three selected fruits of Artocarpus species namely, Artocarpus odoratissimus (tarap), Artocarpus kemando (pudu) and Artocarpus integer (cempedak). The total phenolic, total flavonoid and total carotenoid contents of different parts of the fruits (peel, flesh and seed) were analyzed spectrophotometrically. The antioxidant properties were assessed by DPPH, FRAP and ABTS method. The total phenolic content of all parts of the fruits ranging from 3.53 to 42.38 mg GAE/g of dry sample. The total flavonoid was in the range of 0.82 to 36.78 mg CE/g of dry sample whereas the total carotenoid ranging from 0.67 to 3.30 mg s-carotene/g of dry sample. The peel and seed displayed higher phytochemical contents (as compared with the flesh) and were found to be efficient radical scavengers and reducing agents. Total phenolic and total flavonoid contents were significantly correlated with the antioxidant activities. However, the total carotenoid was weakly correlated with the antioxidant activities. Due to the findings of this research, it is observed that the phytochemical compounds are the major contributor to the antioxidant activities. A. odoratissimus has the potential to be used as antioxidant agents due to high phytochemical contents and high antioxidant activity for all tested methods.

English

Regeneration of Imperata grassland areas is becoming increasingly important, both to create new secondary forest and to recover the original biodiversity. We studied the diversity of plant communities in secondary succession of Imperata grasslands using 45 subplots of 9 linear transects (10 m x 100 m). Data was collected and all stems over 10 cm dbh were identified , the Importance Values Index (IVI) for all trees were calculated, saplings and seedlings were counted and analysed, and soil samples were taken and analysed. Results showed that after more than 10 years of regeneration, 65 families were encountered consisting of 164 species, which were dominated by Vernonia arborea Buch.-Ham, Vitex pinnata L., Macaranga gigantea (Reichb.f. & Zoll.) Muell.Arg., Symplocos crassipes C.B. Clarke, Artocarpus odoratissimus Miq., and Bridelia glauca Blume. The effects of regeneration, from Imperata grassland to secondary forest, on soil were the strongest in the A-horizon where an increase in carbon, N content, and pH were observed. Our result shows that Imperata grasslands appear to be permanent because of frequent fires and human interferences and so far few efforts have been made to promote sustainable rehabilitation. If protected from fire and other disturbances, such as shifting cultivation, Imperata grassland will grow and develop into secondary forest.

Diversity of Plant Communities in Secondary Succession of Imperata Grasslands in Samboja Lestari, East Kalimantan, Indonesia

Regeneration of Imperata grassland areas is becoming increasingly important, both to create new secondary forest and to recover the original biodiversity. The diversity of plant communities in secondary succession of Imperata grasslands was studied using 45 subplots of 9 linear transects (10 m x 100 m). Data was collected and all stems over 10 cm dbh were identified, the Importance Values Index (IVI) for all trees were calculated, saplings and seedlings were counted and analysed, and soil samples were taken and analysed. Results showed that after more than 10 years of regeneration, 65 families were encountered consisting of 164 species, which were dominated by Vernonia arborea Buch.-Ham, Vitex pinnata L., Macaranga gigantea (Reichb.f. & Zoll.) Muell.Arg., Symplocos crassipes C.B. Clarke, Artocarpus odoratissimus Miq., and Bridelia glauca Blume. The effects of regeneration, from Imperata grassland to secondary forest, on soil were the strongest in the A-horizon where an increase in carbon, N content, and pH were observed. Our result shows that Imperata grasslands appear to be permanent because of frequent fires and human interferences and so far few efforts have been made to promote sustainable rehabilitation. If protected from fire and other disturbances, such as shifting cultivation, Imperata grassland will grow and develop into secondary forest.

Artocarpus odoratissimus skin as a potential low-cost biosorbent for the removal of methylene blue and methyl violet 2B

Artocarpus odoratissimus (Tarap) skin shows great potential as an effective low-cost biosorbent for toxic dyes, methylene blue (MB), and methyl violet 2B (MV). The Langmuir adsorption isotherm leads to the maximum biosorption capacities of this biomass, whose point of zero charge was at pH 4.4, of 0.577 mmol g−1 (184.6 mg g−1) and 0.349 mmol g−1 (137.3 mg g−1) for MB and MV, respectively. The Sips isotherm model is the best fit for adsorption of MB, while both the Langmuir and Sips models are in good agreement for MV. Mass transfer of dye species from solution to the biosorbent phase is fast with 50% dye being removed in less than 1 min following the pseudo-second-order kinetics.

Artosimmin- A Potential Anti-Cancer Lead Compound from Artocarpus odoratissimus

Our recent study on Artocarpus odoratissimus (Moraceae) has resulted in the purification of a new prenylated pyranoflavone derivative artosimmin (1) and traxateryl acetate (2). Details of structural elucidations associated with 1 and 2 are reported by combining 1D, 2D NMR and mass spectrometric methods. Compound 2 is obtained for the first time from this species. Furthermore, the biological assay results exhibited compound 1 to be significantly cytotoxic against cancer cell lines (HL-60 & MCF-7) and also possessed antioxidant properties toward 1,1-diphenyl-2-picrylhydrazyl radical (DPPH).

Phytochemicals and antioxidant activity of different parts of bambangan ( Mangifera pajang) and tarap ( Artocarpus odoratissimus)

Mangifera pajang (family: Anacardiaceae; local name: bambangan) and Artocarpus odoratissimus (familiy: Moraceae; local name: tarap) are popular edible fruits in Sabah, Malaysia. The flesh, kernel and peel from M. pajang; seed and flesh from A. odoratissimus were analysed for total antioxidant activity, total polyphenol, total flavonoid and total anthocyanins contents. M. pajang kernel extract displayed the highest free radical scavenging and ferric reducing activities. Total phenolic content of the samples were in the range of 5.96–103.3 mg gallic acid equivalent/g. M. pajang kernel and M. pajang flesh contained the highest and lowest total flavonoid content with the values of 10.98 and 0.07 mg rutin equivalent/g, respectively. The antioxidant activities of extracts were significantly correlated with the total phenolic and flavonoid content (but not the anthocyanins content). The phytochemicals and antioxidant properties of M. pajang and A. odoratissimus, especially their by-products (kernel/seed), indicate that they may impart health benefits when consumed and should be regarded as a valuable source of antioxidant-rich nutraceuticals.

Total phenolic and flavonoid contents of selected parts of Mangifera pajang (bambangan) and Artocarpus odoratissimus (tarap) fruits

Ingestion of fruits has been associated with prevention of degenerative diseases, such as cancer, diabetes and atherosclerosis. In recent years, under-utilised fruit species endemic to specific places have been popular for intensive investigation. M. pajang (Anacardiaceae; local name: bambangan) and A. odoratissimus (Moraceae, local name: tarap) are plant species in the mango and jackfruit groups respectively, which are endemic to Borneo island. This study was conducted to determine the total phenolic and flavonoid content of different parts of both fruits. The fruits were collected and flesh, kernel and peel from M. pajang as well as flesh and seed from A. odoratissimus were freeze-dried. Total phenolic content was determined using Folin-Ciocalteu reagent [1] and flavonoid content was determined using aluminium chloride colorimetric method [2]. Total phenolic content of the samples was in the range of 5.96–103.3mg GAE/g (Gallic acid equivalent). M. pajang kernel and M. pajang flesh contained the highest and lowest total flavonoid content with the values of 10.98 and 0.07mg RE/g (Rutin equivalent), respectively. It seems that the by-products (i.e. kernel and seed) contained higher phenolic and flavonoid content compared to the flesh. In conclusion, our investigation on selected fruits endemic to Borneo indicates that both fruits and their by-products are rich sources of polyphenolic phytochemicals. Investigations on the phytochemical profiling and studies on the bioactivity of the fruits and their by-products are in progress.