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1
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Evaluation of chemical weed control strategies in biomass sorghum

100%
Pannacci E., Bartolini S.
Journal of Plant Protection Research
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2018
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vol. 58
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issue 4
2
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Phytochemical contents and antioxidant potentials of Sorghum bicolor (L.) Moench (Sorghum), Hibiscus sabdariffa L. (Roselle) and their varying blends

86%
Adediran O. A., Adigun P., Ayankunle A. A., Oyegunwa A. S.
World News of Natural Sciences
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2025
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vol. 61
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issue 2
312-319
EN
The use of natural ingredients in food products has gained wide acceptance because of their health benefits for both humans. Sorghum bicolor and Hibiscus sabdariffa possess abundant phytochemicals and bioactive compounds that promote health and wellness. This research was carried out to examine the phytochemical content and antioxidant activities of Sorghum bicolour, Hibiscus sabdariffa L., and their blends The leaf sheaths of Sorghum bicolor and calyces of Hibiscus sabdariffa were procured, dried till constant weight, then pulverised to assess their phytochemical compositions qualitatively and quantitatively. In addition to undiluted sorghum and roselle, blends comprising 75% Sorghum + 25% Roselle, 25% Sorghum + 75% Roselle, and 50% Sorghum + 50% Roselle were derived, to make a total of five treatments for evaluation. The DPPH activities of the plants and their blends were also assessed. The results showed that saponin, alkaloids, flavonoid, tannin and reducing sugar were found in the blends. There were significant (p<0.05) differences in phytochemical composition of Sorghum bicolor, Roselle and their different blends. Tannin and Saponin contents were significantly (p<0.05) highest (125.67, 65.19, respectively) in 75% Sorghum + 25% Roselle and lowest in 100%Roselle (85.42) and 100% Roselle (52.19). Alkaloid and reducing sugar followed the same trend with 100% Roselle having significantly (p<0.05) higher values (59.12, 12.89), while 75% Sorghum + 25% Roselle had the lowest value of 40.76, and 7.82respectively. Flavonoid was significantly (p<0.05) the highest (82.31) in 50% Sorghum + 50% Roselle and lowest in 75% Sorghum + 25% Roselle. The antioxidant activity measured via DPPH was significantly different (p<0.05) across treatments with 50% Sorghum + 50% Roselle recording the highest (66.53), 100%Sorghum had the lowest (49.69), while 100% Rosselle, 75% Sorghum + 25% Roselle and 50% Sorghum + 50% Roselle had values of 65.20, 64.13 and 57.20 respectively. The combination of Sorghum bicolor and roselle blends presents greater antioxidative properties, with great potentials for the reducing lipid oxidation and microbial activities that can lead to food spoilage, thus improving the shelf life of food and ensuring the safe consumption of such food products in which they are embedded.
3
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Structure-property relationships in mechanically stimulatedSorghum bicolorstalks

72%
Lemloh M.-L., Pohl A., Weber E., Zeiger M., Bauer P., Weiss I. M., Schneider A. S.
Bioinspired Materials
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2014
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vol. 1
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issue 1
EN
Mechanical properties of plants and underlying structure-property relationships are important for agricultural purposes as well as for biomimetic concepts. In this study, the effect of mechanical stimulation on morphology and bending properties of the stalk was investigated for Sorghum bicolor (Poaceae), a widely used drought-tolerant biomass grass. An experimental set-up allowing for defined growth and mechanical perturbation (flexing) during a defined growth period was designed. Mechanical properties of individual internodes of the stalk were determined by three-point bending tests. We found that the three investigated lines showed differences in their general bending strength in the non-stimulated condition. However, similar high range of bending strength values was measured for all plant lines after they underwent the mechanical stimulation procedure. The anatomy of internode cross-sections was examined to evaluate structure-property relationships. An increased thickness of the outer sclerenchymatous tissue was observed for internodes with higher bending strength values. Dried internodes fail under lower strains but showed higher bending strength. These findings show that mechanosensitivity in sorghum is dependent on genetic as well as environmental factors. The experimental system presented here offers new straight-forward possibilities for S. bicolor line selection for applications requiring mechanical strength of the stalk.
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