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Pielorz S, Kita A, Rytel E, Szostak R, Mazurek S. Application of vibrational and fluorescence spectroscopy to the compositional analysis of colored-flesh potatoes. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:1399-1407. [PMID: 37782467 DOI: 10.1002/jsfa.13021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/20/2023] [Accepted: 10/02/2023] [Indexed: 10/03/2023]
Abstract
BACKGROUND Determination of composition and physicochemical parameters of natural products requires dedicated, often laborious and expensive, analytical protocols. Different spectroscopic techniques, in conjunction with chemometrics, seem to have a considerable potential in direct analysis of raw plant material and foods, without any chemical treatment. RESULTS Fluorescence spectroscopy and three vibrational spectroscopy techniques were applied to determine total polyphenol content, antioxidant activity and macronutrient levels in red- and purple-fleshed potato varieties. Excitation-emission matrix fluorescence, Fourier transform Raman, attenuated total reflection Fourier transform infrared and near-infrared spectra were recorded for the freeze-dried samples. Combining spectral data and the results of reference analyses, partial least squares regression models were constructed for each parameter studied. For polyphenols and antioxidant activity, quantification errors found for validation samples amounted to 3.74-5.04% and 4.75-6.35%, respectively, whereas macronutrient analysis gave errors in the 3.45-4.55%, 3.09-5.30% and 5.10-8.58% ranges for starch, protein and sugar determinations, respectively. CONCLUSION The obtained results demonstrate that different spectroscopic techniques in combination with multivariate modeling allow simultaneous determination of various parameters of plant samples based on a single sample spectrum. They can effectively replace commonly used protocols of food product analysis requiring sample dissolving and extraction of the compounds of interest. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Sonia Pielorz
- Department of Chemistry, University of Wrocław, Wrocław, Poland
| | - Agnieszka Kita
- Department of Food Storage and Technology, Faculty of Biotechnology and Food Science, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
| | - Elżbieta Rytel
- Department of Food Storage and Technology, Faculty of Biotechnology and Food Science, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
| | - Roman Szostak
- Department of Chemistry, University of Wrocław, Wrocław, Poland
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Putro PA, Sakti AW, Ahmad F, Nakai H, Alatas H. Quantum mechanical assessment on the optical properties of capsanthin conformers. J Comput Chem 2023; 44:2319-2331. [PMID: 37548072 DOI: 10.1002/jcc.27199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 06/25/2023] [Accepted: 07/15/2023] [Indexed: 08/08/2023]
Abstract
As optical properties, the ultraviolet-visible (UV-Vis) absorption spectra of capsanthin-based red natural dye are a decisive parameter for their usage in various applications. Thus, accurately predicting the maximum UV-Vis wavelength (λ max ) values is critical in designing dye-conjugated material. Extensive metadynamics simulations were carried out to generate capsanthin conformers at various levels of the extended tight-binding method. Benchmarking the time-dependent density-functional theory (TD-DFT) methods help understand the results of a particular functional and allows a comparison between results obtained with different functional. The long-range correction (LC) scheme in LC-TD-DFT-D4/ωB97X/def2-SVP has been found to reproduce the experimentalλ max , and exhibited the effect of conformational changes to the calculated wavelengths. On the other hand, an inexpensive yet efficient LC-TD-DFTB method reproduced the experimentalλ max insensitive to conformational changes.
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Affiliation(s)
- Permono Adi Putro
- Theoretical Physics Division, Department of Physics, Faculty of Mathematics and Natural Sciences, IPB University, Bogor, Indonesia
- Department of Physics, Faculty of Science, Universitas Mandiri, Subang, Indonesia
- Indonesia Computational-Research Consortium on Renewable Energy (ICRC-RE), IPB University, Bogor, Indonesia
| | - Aditya Wibawa Sakti
- Theoretical Physics Division, Department of Physics, Faculty of Mathematics and Natural Sciences, IPB University, Bogor, Indonesia
- Indonesia Computational-Research Consortium on Renewable Energy (ICRC-RE), IPB University, Bogor, Indonesia
- Global Center for Science and Engineering, Waseda University, Tokyo, Japan
- Department of Chemistry, Faculty of Science and Computer, Universitas Pertamina, Jakarta, Indonesia
| | - Faozan Ahmad
- Theoretical Physics Division, Department of Physics, Faculty of Mathematics and Natural Sciences, IPB University, Bogor, Indonesia
- Indonesia Computational-Research Consortium on Renewable Energy (ICRC-RE), IPB University, Bogor, Indonesia
| | - Hiromi Nakai
- Department of Chemistry and Biochemistry, Waseda University, Tokyo, Japan
| | - Husin Alatas
- Theoretical Physics Division, Department of Physics, Faculty of Mathematics and Natural Sciences, IPB University, Bogor, Indonesia
- Indonesia Computational-Research Consortium on Renewable Energy (ICRC-RE), IPB University, Bogor, Indonesia
- Center for Transdisciplinary & Sustainability Sciences (CTSS), IPB University, Bogor, Indonesia
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Islam K, Rawoof A, Kumar A, Momo J, Ahmed I, Dubey M, Ramchiary N. Genetic Regulation, Environmental Cues, and Extraction Methods for Higher Yield of Secondary Metabolites in Capsicum. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37289974 DOI: 10.1021/acs.jafc.3c01901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Capsicum (chili pepper) is a widely popular and highly consumed fruit crop with beneficial secondary metabolites such as capsaicinoids, carotenoids, flavonoids, and polyphenols, among others. Interestingly, the secondary metabolite profile is a dynamic function of biosynthetic enzymes, regulatory transcription factors, developmental stage, abiotic and biotic environment, and extraction methods. We propose active manipulable genetic, environmental, and extraction controls for the modulation of quality and quantity of desired secondary metabolites in Capsicum species. Specific biosynthetic genes such as Pun (AT3) and AMT in the capsaicinoids pathway and PSY, LCY, and CCS in the carotenoid pathway can be genetically engineered for enhanced production of capsaicinoids and carotenoids, respectively. Generally, secondary metabolites increase with the ripening of the fruit; however, transcriptional regulators such as MYB, bHLH, and ERF control the extent of accumulation in specific tissues. The precise tuning of biotic and abiotic factors such as light, temperature, and chemical elicitors can maximize the accumulation and retention of secondary metabolites in pre- and postharvest settings. Finally, optimized extraction methods such as ultrasonication and supercritical fluid method can lead to a higher yield of secondary metabolites. Together, the integrated understanding of the genetic regulation of biosynthesis, elicitation treatments, and optimization of extraction methods can maximize the industrial production of secondary metabolites in Capsicum.
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Affiliation(s)
- Khushbu Islam
- School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Abdul Rawoof
- School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Ajay Kumar
- Department of Plant Sciences, School of Biological Sciences, Central University of Kerala, Kasaragod 671316, Kerala, India
| | - John Momo
- School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Ilyas Ahmed
- School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Meenakshi Dubey
- Department of Biotechnology, Delhi Technological University, New Delhi 110042, India
| | - Nirala Ramchiary
- School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
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Liu ZX, Xiong SR, Tang SH, Wang Y, Tan J. A practical application of front-face synchronous fluorescence spectroscopy to rapid, simultaneous and non-destructive determination of piperine and multiple adulterants in ground black and white pepper (Piper nigrum L.). Food Res Int 2023; 167:112654. [PMID: 37087244 DOI: 10.1016/j.foodres.2023.112654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 02/20/2023] [Accepted: 02/25/2023] [Indexed: 03/04/2023]
Abstract
Based on the distinct fluorescence of piperine and tryptophan, and their different profiles in pepper and several possible adulterants, front-face synchronous fluorescence spectroscopy (FFSFS) was applied for the fast and non-invasive authentication of ground black pepper adulterated with papaya seed powder and buckwheat flour, and ground white pepper adulterated with whole wheat and maize flours. For either single adulterant or dual adulterants in the range of 10-40% w/w, prediction models were constructed based on the combination of unfolded total synchronous fluorescence spectra and partial least square (PLS) regression, and were validated by both five-fold cross-validation and external validation. The built PLS2 models produced suitable results, with most of the determination coefficients of prediction (Rp2) greater than 0.8, the root mean square error of prediction (RMSEP) < 5% and residual predictive deviation (RPD) greater than 2. The limits of detection (LODs) were 11.1, 5.5, 10.6 and 12.0% for papaya seed powder, buckwheat, whole wheat and maize flours, respectively. Most relative prediction errors for simulated blind samples were within ± 30%. Besides, piperine in ground black and white pepper was also determined with acceptable PLS results.
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Liu ZX, Tang SH, Wang Y, Tan J, Jiang ZT. Rapid, simultaneous and non-destructive determination of multiple adulterants in Panax notoginseng powder by front-face total synchronous fluorescence spectroscopy. Fitoterapia 2023; 166:105469. [PMID: 36907229 DOI: 10.1016/j.fitote.2023.105469] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 02/16/2023] [Accepted: 03/06/2023] [Indexed: 03/13/2023]
Abstract
The authentication of traditional herbal medicines in powder form is of great significance, as they are always of high values but vulnerable to adulteration. Based on the distinct fluorescence of protein tryptophan, phenolic acids and flavonoids, front-face synchronous fluorescence spectroscopy (FFSFS) was applied for the fast and non-invasive authentication of Panax notoginseng powder (PP) adulterated with the powder of rhizoma curcumae (CP), maize flour (MF) and whole wheat flour (WF). For either single or multiple adulterants in the range of 5-40% w/w, prediction models were built based on the combination of unfolded total synchronous fluorescence spectra and partial least square (PLS) regression, and were validated by both five-fold cross-validation and external validation. The constructed PLS2 models simultaneously predicted the contents of multiple adulterants in PP and gave suitable results, with most of the determination coefficients of prediction (Rp2) >0.9, the root mean square error of prediction (RMSEP) no >4% and residual predictive deviation (RPD) >2. The limits of detections (LODs) were 12.0, 9.1 and 7.6% for CP, MF and WF, respectively. All the relative prediction errors for simulated blind samples were between -22% and + 23%. FFSFS offers a novel alternative to the authentication of powdered herbal plants.
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Affiliation(s)
- Zhao-Xi Liu
- Tianjin International Joint Research & Development Center of Food Science and Engineering, Tianjin Key Laboratory of Food Biotechnology, College of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China
| | - Shu-Hua Tang
- Tianjin International Joint Research & Development Center of Food Science and Engineering, Tianjin Key Laboratory of Food Biotechnology, College of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China
| | - Ying Wang
- Tianjin International Joint Research & Development Center of Food Science and Engineering, Tianjin Key Laboratory of Food Biotechnology, College of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China
| | - Jin Tan
- Tianjin International Joint Research & Development Center of Food Science and Engineering, Tianjin Key Laboratory of Food Biotechnology, College of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China.
| | - Zi-Tao Jiang
- Tianjin International Joint Research & Development Center of Food Science and Engineering, Tianjin Key Laboratory of Food Biotechnology, College of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China; School of Food Engineering, Tianjin Tianshi College, Tianjin 301700, China.
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Development of an HPLC-PDA Method for the Determination of Capsanthin, Zeaxanthin, Lutein, β-Cryptoxanthin and β-Carotene Simultaneously in Chili Peppers and Products. Molecules 2023; 28:molecules28052362. [PMID: 36903607 PMCID: PMC10005789 DOI: 10.3390/molecules28052362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 02/24/2023] [Accepted: 02/28/2023] [Indexed: 03/08/2023] Open
Abstract
For the better standardization and widespread application of the determination method of carotenoids in both chili peppers and their products, this work reports for the first time the simultaneous determination of five main carotenoids, including capsanthin, zeaxanthin, lutein, β-cryptoxanthin and β-carotene in chili peppers and their products, with optimized extraction and the high-performance liquid chromatography (HPLC) method. All parameters in the methodological evaluation were found to be in good stability, recovery and accuracy compliance with the reference values; the R coefficients for the calibration curves were more than 0.998; and the LODs and LOQs varied from 0.020 to 0.063 and from 0.067 to 0.209 mg/L, respectively. The characterization of five carotenoids in chili peppers and their products passed all the required validation criteria. The method was applied in the determination of carotenoids in nine fresh chili peppers and seven chili pepper products.
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Predicting ASTA color values of peppers via LED-induced fluorescence. J FOOD ENG 2022. [DOI: 10.1016/j.jfoodeng.2022.111135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Lelis CA, Galvan D, Tessaro L, de Andrade JC, Mutz YS, Conte-Junior CA. Fluorescence spectroscopy in tandem with chemometric tools applied to milk quality control. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104515] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Xue SS, Tan J, Xie JY, Li MF. Rapid, simultaneous and non-destructive determination of maize flour and soybean flour adulterated in quinoa flour by front-face synchronous fluorescence spectroscopy. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108329] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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