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A review on Arum palaestinum: phytochemical and biological aspects

Abstract

Arum palaestinum is a wild edible, parietal, unisexual, perennial plant that grows in various parts of the Middle East, and frequently used in traditional Arabic Palestinian herbal medicine. The present review summarises information concerning Arum palaestinum including background information, historical records, phytochemical components, and biological activity which represents an important tool for further research studies. Arum palaestinum is thought to contain a wealth of rich bioactive compounds, such as terpinoids, polyphenols, flavonoids, and alkaloids. Long-term research on these compounds has demonstrated antioxidant, antibacterial, anti-inflammatory, and anticancer activities. Its aerial parts yielded the identification of over 180 chemicals, whereas its flowering part's GC/MS study revealed the presence of twelve compounds. Its leaf extracts demonstrated toxicity against various cancer cell lines. Extracts from its flowers demonstrated potent anti-inflammatory and dose-dependent cytotoxic effects. The potential of GZ17-6.02, a promising combinatorial drug made from plant components, for clinical cancer treatment is still being investigated.

article Review; Early Access

date_range 2024

language English

link Link of the paper

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Albarghouti Ghassan

Habash Baydaa'

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Effect of corrosion on flexural strength of reinforced concrete beams with polypropylene fibers

Abstract

An experimental study was performed to investigate the effects of polypropylene fibers on uncorroded and corroded reinforced concrete beams. Three different volume fractions of polypropylene fibers having 0, 0.5, and 1.5%, were tested at four corrosion levels of 0% and approximately 5, 7, and 9%. A full scale of an accelerated corrosion pool was used for the accelerated corrosion process. Reinforced concrete beams were used for an under monotonic bending test. The contribution of the actual corrosion levels of transverse and longitudinal reinforcement bars to the total corrosion levels were obtained from reinforcement bars fully extracted from concrete. Flexural strength, bond-slip, and moment-curvature relationships were examined for uncorroded and corroded reinforced concrete beams. A new model was developed to predict the flexural strength of corroded reinforced concrete beams. The proposed model for predicting the residual flexural strength of corroded beams was compared with test data published in previous studies. Furthermore, a novel model is presented for improved predictions between the actual and theoretically estimated corrosion mass losses, based on Faraday’s law, with the aid of fully extracted reinforcement bars. The model used to predict the flexural strength of corroded reinforced concrete beams with large sizes demonstrated good agreement with current and previously published literature data. In the case of corroded beams comprising differing amounts of polypropylene fibers, the performance of the corroded beams was limited by a fiber volume fraction of 1.5% at low corrosion levels.

article Article

date_range 2018

language English

link Link of the paper

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