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Improvement of the antioxidant potential: impact of drying and extraction techniques on polyphenols in Arbutus unedo L. leaf aqueous extract Zemour, Kamel; Chouhim, Kadda Mohamed Amine; Labdelli, Amina; Mairif, Mohamed; Ardjane, Tedj Eddine Adda; Moussaoui, Badreddine; Zemour, Hafidh; Laafer, Mohammed
Journal of Agriculture and Applied Biology Vol 5 No 1 (2024): Journal of Agriculture and Applied Biology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jaab.05.01.03

The search for alternatives to chemical pharmaceutical products remains an urgent and crucial step for humanity. In this regard, the use of plants presents an ideal approach for such biological studies. Arbutus unedo L., which belongs to the family Ericaceae, is one of the species that holds significant importance in traditional pharmaceutical uses. In Algeria, the use of this species in traditional treatment is generally rare. Therefore, this study aims to highlight its medicinal importance and the proper method for extracting its bioactive elements. To achieve this, the biological activity of leaves including total phenolic content (TPC), DPPH assay, and total flavonoid content (TFC), were assessed under four different drying temperatures (shade-drying, sun-drying, 40°C and 60C°) and two extraction methods after maceration (centrifugation, filtration). The results have indicated that these processes have affected the final accumulation of polyphenols and antioxidant activity in the leaf extracts. Additionally, it has been highlighted that the centrifugation method extracts a higher biochemical amount, especially after drying at 40°C. Furthermore, Arbutus unedo L. leaves should be considered a promising source of natural compounds to be used as ingredients in various fields.

The effects of herbicide application on the properties of agricultural soil in Algeria Meliani, Kaddour; Oulbachir , Karima; Zemour , Hafidh; Ardjane, Tedj Eddine Adda
Journal of Agriculture and Applied Biology Vol 5 No 2 (2024): Journal of Agriculture and Applied Biology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jaab.05.02.02

Phytosanitary products, particularly herbicides, are essential for weed control in agriculture. This study examined the concentration and persistence of Pinoxaden residues in different soil textures. Seventy-two soil samples from two farms in Tiaret, Algeria, were analyzed using liquid chromatography (HPLC) to measure herbicide residues. The analysis used a mobile phase of acetonitrile and methanol (50/50, V/V) with a retention time of 2 minutes. Results indicated significant differences in residue persistence based on soil texture. Clay-loam soils showed higher residue persistence, averaging 6.01 × 10^-4 ± 8.7 × 10^-5 μg/g, while sandy soils had lower persistence, averaging 6.4 × 10^-5 ± 5.9 × 10^-6 μg/g. This underscores the impact of soil characteristics on herbicide behavior and the need for tailored management strategies. Despite herbicides' benefits, their environmental impacts are concerning. Persistent residues can contaminate soil and harm ecosystems. Raising awareness among stakeholders about these risks is essential. The study recommends sustainable alternatives, such as biological control methods, to reduce dependency on chemical herbicides. Biological controls offer eco-friendly solutions, promoting ecosystem balance and reducing agriculture's ecological footprint. Implementing crop rotation and other integrated pest management (IPM) strategies can enhance weed control effectiveness while decreasing reliance on chemical herbicides. These practices mitigate environmental risks and improve soil health and agricultural productivity. In conclusion, while herbicides are indispensable in modern agriculture, responsible use and management are crucial for environmental sustainability and the long-term viability of agricultural systems. By adopting sustainable practices and innovative technologies, it is possible to balance agricultural productivity with environmental protection.

Improvement of the antioxidant potential: impact of drying and extraction techniques on polyphenols in Arbutus unedo L. leaf aqueous extract Zemour, Kamel; Chouhim, Kadda Mohamed Amine; Labdelli, Amina; Mairif, Mohamed; Ardjane, Tedj Eddine Adda; Moussaoui, Badreddine; Zemour, Hafidh; Laafer, Mohammed
Journal of Agriculture and Applied Biology Vol 5 No 1 (2024): Journal of Agriculture and Applied Biology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jaab.05.01.03

The search for alternatives to chemical pharmaceutical products remains an urgent and crucial step for humanity. In this regard, the use of plants presents an ideal approach for such biological studies. Arbutus unedo L., which belongs to the family Ericaceae, is one of the species that holds significant importance in traditional pharmaceutical uses. In Algeria, the use of this species in traditional treatment is generally rare. Therefore, this study aims to highlight its medicinal importance and the proper method for extracting its bioactive elements. To achieve this, the biological activity of leaves including total phenolic content (TPC), DPPH assay, and total flavonoid content (TFC), were assessed under four different drying temperatures (shade-drying, sun-drying, 40°C and 60C°) and two extraction methods after maceration (centrifugation, filtration). The results have indicated that these processes have affected the final accumulation of polyphenols and antioxidant activity in the leaf extracts. Additionally, it has been highlighted that the centrifugation method extracts a higher biochemical amount, especially after drying at 40°C. Furthermore, Arbutus unedo L. leaves should be considered a promising source of natural compounds to be used as ingredients in various fields.

The effects of herbicide application on the properties of agricultural soil in Algeria Meliani, Kaddour; Oulbachir , Karima; Zemour , Hafidh; Ardjane, Tedj Eddine Adda
Journal of Agriculture and Applied Biology Vol 5 No 2 (2024): Journal of Agriculture and Applied Biology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jaab.05.02.02

Phytosanitary products, particularly herbicides, are essential for weed control in agriculture. This study examined the concentration and persistence of Pinoxaden residues in different soil textures. Seventy-two soil samples from two farms in Tiaret, Algeria, were analyzed using liquid chromatography (HPLC) to measure herbicide residues. The analysis used a mobile phase of acetonitrile and methanol (50/50, V/V) with a retention time of 2 minutes. Results indicated significant differences in residue persistence based on soil texture. Clay-loam soils showed higher residue persistence, averaging 6.01 × 10^-4 ± 8.7 × 10^-5 μg/g, while sandy soils had lower persistence, averaging 6.4 × 10^-5 ± 5.9 × 10^-6 μg/g. This underscores the impact of soil characteristics on herbicide behavior and the need for tailored management strategies. Despite herbicides' benefits, their environmental impacts are concerning. Persistent residues can contaminate soil and harm ecosystems. Raising awareness among stakeholders about these risks is essential. The study recommends sustainable alternatives, such as biological control methods, to reduce dependency on chemical herbicides. Biological controls offer eco-friendly solutions, promoting ecosystem balance and reducing agriculture's ecological footprint. Implementing crop rotation and other integrated pest management (IPM) strategies can enhance weed control effectiveness while decreasing reliance on chemical herbicides. These practices mitigate environmental risks and improve soil health and agricultural productivity. In conclusion, while herbicides are indispensable in modern agriculture, responsible use and management are crucial for environmental sustainability and the long-term viability of agricultural systems. By adopting sustainable practices and innovative technologies, it is possible to balance agricultural productivity with environmental protection.

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