Search

Showing total 2 results
Start Over Topic calcium chloride Publication Year Range Last 10 years
2 results

1. Improving yield and quality of Manfalouty pomegranate growing in newly reclaimed soils by using bagging and some foliar spray treatments.

Author

Ahmed, Ahmed Abdelhalim and Gaber, Shimaa H.

Subjects
POMEGRANATE, HARVESTING time, CALCAREOUS soils, FRUIT yield, PAPER bags, CALCIUM chloride
Abstract

We looked into bagging and spraying as potential methods for increasing the yield and quality of Manfaloty pomegranate trees. During the 2020 and 2021 seasons, 7-year-old trees were used in the investigation. They were grown in sandy, calcareous soil with high temperatures. Six treatments were used to examine the effects on fruit yield and quality parameters at harvest time in the first week of September. These treatments included foliar spraying with kaolin and potassium silicate treatments, polypropylene bags and bagging with white and yellow paper. Results indicated that white paper bagging resulted in the lowest percentage of fruit cracking and sunburn compared to the control and other treatments. White paper bagging increased fruit yield, weight, length, and diameter. Additionally, compared to the other treatments, the application of kaolin spray increased the biochemical contents of the fruit (TSS, total sugars, vitamin C, anthocyanin, and juice) while lowering acidity and tannins. We concluded that using kaolin spray and white paper bags could enhance the yield and quality of Manfaloty pomegranate grown under challenging conditions. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

2. Ag@Au nanoprism-metal organic framework-based paper for extending the glucose sensing range in human serum and urine

Author

Jian Fan Zhu, Ying-Chu Wang, Tzu-Ting Chen, Mei-Lin Ho, Jong-Jheng Luo, Tzu-Chieh Lin, Pin-Hsuan Huang, Chia Ping Hong, Ning-Kuei Sun, Tien-Li Lin, Chu-Ting Chan, Zheng-Bang Pan, Yu-Chien Ko, Jing-Jong Shyue, and Chia-Cheng Kang

Subjects
Blood Glucose, Paper, Silver, Analytical chemistry, Metal Nanoparticles, 02 engineering and technology, Biosensing Techniques, 010402 general chemistry, 01 natural sciences, Inorganic Chemistry, chemistry.chemical_compound, Calcium Chloride, Glucose Oxidase, Limit of Detection, Humans, Glucose oxidase, Surface plasmon resonance, Metal-Organic Frameworks, Detection limit, biology, Glucose meter, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Glucose, chemistry, Luminophore, biology.protein, Gold, 0210 nano-technology, Fluorescent glucose biosensor, Phosphorescence, Biosensor, Oxidation-Reduction
Abstract

In this work, we present a Ag@Au nanoprism-metal-organic framework-paper based glucose sensor for rapid, sensitive, single-use and quantitative glucose determination in human serum. To achieve painless measurement of glucose with a non-invasive detection methodology, this biosensor was further tested in human urine. In this approach, a new hybrid-Ag@Au nanoprism loaded in close proximity to micrometer sized coordination polymers as phosphorescent luminophores significantly enhanced the emission intensity due to metal-enhanced phosphorescence and worked as reaction sites to support more dissolved oxygen. Reports of enhanced phosphorescence intensity are relatively rare, especially at room temperature. The true enhancement factor of Ag@Au-phosphorescent metal-organic frameworks on paper was deduced to be 110-fold, making it a better optical type glucose meter. The results demonstrate the validity of the intensity enhancement effect of the excitation of the overlap of the emission band of a luminophore with the surface plasmon resonance band of Ag@Au nanoprisms. Ag@Au nanoprisms were used not only to improve the detection limit of glucose sensing but also to extend the glucose sensing range by enhancing the oxygen oxidation efficiency. The oxidation of glucose as glucose oxidase is accompanied by oxygen consumption, which increases the intensity of the phosphorescence emission. The turn-on type paper-based biosensor exhibits a rapid response (0.5 s), a low detection limit (0.038 mM), and a wide linear range (30 mM to 0.05 mM), as well as good anti-interference, long-term longevity and reproducibility. Finally, the biosensor was successfully applied to the determination of glucose in human serum and urine.

Published
2017