The aim of the study involved evaluating the chemical composition of tubers of five potato cultivars that were grown under the same cultural practices in soils with low, medium, and high availability of phosphorus. The experimental designs corresponded to a randomized block with four replicates. Tuber samples were analyzed in terms of moisture, ash, protein, lipid, total sugar, fiber, starch, and phosphorus contents. The results suggested that increased availability of phosphorus in soil allowed the production of tubers with higher dry matter content, lower total sugar content, and a higher percentage of starch and protein. Hence, the aforementioned parameters constitute important factors corresponding to the nutritional and industrial quality of potatoes. Increased phosphorus availability in soil can promote significant changes in the composition of potato tubers, and thereby in potential uses of tubers.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5502030 | PMC |
http://dx.doi.org/10.1007/s13197-017-2677-6 | DOI Listing |
Thermogravimetry coupled with simultaneous evolved gas analysis by mass spectrometry was used for discerning organic compounds released during the thermal degradation of paint whose chemical compositions are not readily accessible. Thermogravimetric analyses up to 600°C revealed distinct degradation patterns under inert and oxidative conditions. Significant degradation of paint initiates at around 360°C and concludes at 500°C in a nitrogen atmosphere.
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December 2024
University of Mainz, Department of Chemistry, Duesbergweg 10-14, 55099 Mainz, Germany.
The title compound CHClN, also named as TRAM-34, crystallizes in the monoclinic space group 2/n. The dihedral angles between the pyrazole ring and the three six-membered rings are 62.28 (9), 69.
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December 2024
University of Mainz, Department of Chemistry, Duesbergweg 10-14, 55099 Mainz, Germany.
The title compound, CHO, was prepared from α-pinene in three steps. The ester and acid moieties are on the slightly folded cyclo-butane ring. In the crystal, carb-oxy-lic acid bound dimers form layers parallel to (202).
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December 2024
Nelson Mandela University, Summerstrand Campus, Department of Chemistry, University Way, Summerstrand, PO Box 77000, Port Elizabeth, 6031, South Africa.
The title compound, CHIN, is the -iodinated derivative of aniline. The asymmetric unit contains two mol-ecules. The structure was refined as a two-component inversion twin with a volume ratio of 55.
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December 2024
School of Chemistry and Physics, University of KwaZulu-Natal, Private Bag X54001, Durban, 4000, South Africa.
The cation of the title salt, CHNO ·Br, has a dihedral angle of 24.26 (6)° between its fused imidazole and 4-nitro-phenyl rings and the N-C-C-O torsion angle associated with the hy-droxy-ethyl substituent is 60.15 (17)°.
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