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Moll MD, Kahlert L, Gross E, Schwarze E, Blings M, Hillebrand S, Ley J, Kraska T, Pude R. VIS-NIR Modeling of Hydrangenol and Phyllodulcin Contents in Tea-Hortensia (Hydrangea macrophylla subsp. serrata). Horticulturae 2022; 8:264. [DOI: 10.3390/horticulturae8030264] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Hyperspectral data are commonly used for the fast and inexpensive quantification of plant constituent estimation and quality control as well as in research and development applications. Based on chemical analysis, different models for dihydroisocoumarins (DHCs), namely hydrangenol (HG) and phyllodulcin (PD), were built using a partial least squares regression (PLSR). While HG is common in Hydrangea macrophylla, PD only occurs in cultivars of Hydrangea macrophylla subsp. serrata, also known as ‘tea-hortensia’. PD content varies significantly over the course of the growing period. For maximizing yield, a targeted estimation of PD content is needed. Nowadays, DHC contents are determined via UPLC, a time-consuming and a destructive method. In this research article we investigated PLSR-based models for HG and PD using three different spectrometers. Two separate trials were conducted to test for model quality. Measurement conditions, namely fresh or dried leaves and black or white background, did not influence model quality. While highly accurate modeling of HG and PD for single plants was not possible, the determination of the mean content on a larger scale was successful. The results of this study show that hyperspectral modeling as a decision support for farmers is feasible and provides accurate results on a field scale.
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An X, Zhang B, Li X, Du T, Ai Z, Zhang C, Xu J, Sun F, Zhang Y, Du Y. Construction of 4-(Methylthio)isochromenones Skeleton through Regioselective Intramolecular Cyclization of 2-Alkynylbenzoate Mediated by DMSO/[D6
]DMSO and SOCl2. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901723] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xuechan An
- School of Pharmaceutical Science and Technology; Tianjin University; 300072 Tianjin China
| | - Beibei Zhang
- School of Pharmaceutical Science and Technology; Tianjin University; 300072 Tianjin China
| | - Xiaoxian Li
- School of Pharmaceutical Science and Technology; Tianjin University; 300072 Tianjin China
| | - Tianshu Du
- School of Pharmaceutical Science and Technology; Tianjin University; 300072 Tianjin China
| | - Zhenkang Ai
- School of Pharmaceutical Science and Technology; Tianjin University; 300072 Tianjin China
| | - Chenglin Zhang
- School of Pharmaceutical Science and Technology; Tianjin University; 300072 Tianjin China
| | - Jun Xu
- School of Pharmaceutical Science and Technology; Tianjin University; 300072 Tianjin China
| | - Fengxia Sun
- College of Chemical and Pharmaceutical Engineering; Hebei University of Science and Technology; Hebei Research Center of Pharmaceutical and Chemical Engineering; 050018 Shijiazhuang China
| | - Yilin Zhang
- C. Eugene Bennett Department of Chemistry; West Virginia University; 26506-6045 Morgantown West Virginia United States
| | - Yunfei Du
- School of Pharmaceutical Science and Technology; Tianjin University; 300072 Tianjin China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); 300072 Tianjin China
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Wolfbeis OS. Synthesen von Fluoreszenzfarbstoffen, 11 über die Umlagerung von Alkoxymethylen- und Aminomethylenhomophthalsäureanhydriden zu Isocumarinen bzw. Isochinolinonen. ACTA ACUST UNITED AC 1981. [DOI: 10.1002/jlac.198119810507] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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