Robustness of Tomato Quality Evaluation Using a Portable Vis-SWNIRS for Dry Matter and Colour
The utility of a handheld visible-short wave near infrared spectrophotometer utilising an interactance optical geometry was assessed in context of the noninvasive determination of intact tomato dry matter content, as an index of final ripe soluble solids content, and colouration, as an index of matu...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | International Journal of Analytical Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2017/2863454 |
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| author | U. K. Acharya P. P. Subedi K. B. Walsh |
| author_facet | U. K. Acharya P. P. Subedi K. B. Walsh |
| author_sort | U. K. Acharya |
| collection | DOAJ |
| description | The utility of a handheld visible-short wave near infrared spectrophotometer utilising an interactance optical geometry was assessed in context of the noninvasive determination of intact tomato dry matter content, as an index of final ripe soluble solids content, and colouration, as an index of maturation to guide a decision to harvest. Partial least squares regression model robustness was demonstrated through the use of populations of different harvest dates or growing conditions for calibration and prediction. Dry matter predictions of independent populations of fruit achieved R2 ranging from 0.86 to 0.92 and bias from −0.14 to 0.03%. For a CIE a⁎ colour model, prediction R2 ranged from 0.85 to 0.96 and bias from −1.18 to −0.08. Updating the calibration model with new samples to extend range in the attribute of interest and in sample matrix is key to better prediction performance. The handheld spectrometry system is recommended for practical implementation in tomato cultivation. |
| format | Article |
| id | doaj-art-99c9b78e53a940aabffe4c4d8b483abf |
| institution | Kabale University |
| issn | 1687-8760 1687-8779 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Analytical Chemistry |
| spelling | doaj-art-99c9b78e53a940aabffe4c4d8b483abf2025-08-20T03:36:48ZengWileyInternational Journal of Analytical Chemistry1687-87601687-87792017-01-01201710.1155/2017/28634542863454Robustness of Tomato Quality Evaluation Using a Portable Vis-SWNIRS for Dry Matter and ColourU. K. Acharya0P. P. Subedi1K. B. Walsh2Central Queensland University, Building 361, Rockhampton, QLD 4701, AustraliaCentral Queensland University, Building 361, Rockhampton, QLD 4701, AustraliaCentral Queensland University, Building 361, Rockhampton, QLD 4701, AustraliaThe utility of a handheld visible-short wave near infrared spectrophotometer utilising an interactance optical geometry was assessed in context of the noninvasive determination of intact tomato dry matter content, as an index of final ripe soluble solids content, and colouration, as an index of maturation to guide a decision to harvest. Partial least squares regression model robustness was demonstrated through the use of populations of different harvest dates or growing conditions for calibration and prediction. Dry matter predictions of independent populations of fruit achieved R2 ranging from 0.86 to 0.92 and bias from −0.14 to 0.03%. For a CIE a⁎ colour model, prediction R2 ranged from 0.85 to 0.96 and bias from −1.18 to −0.08. Updating the calibration model with new samples to extend range in the attribute of interest and in sample matrix is key to better prediction performance. The handheld spectrometry system is recommended for practical implementation in tomato cultivation.http://dx.doi.org/10.1155/2017/2863454 |
| spellingShingle | U. K. Acharya P. P. Subedi K. B. Walsh Robustness of Tomato Quality Evaluation Using a Portable Vis-SWNIRS for Dry Matter and Colour International Journal of Analytical Chemistry |
| title | Robustness of Tomato Quality Evaluation Using a Portable Vis-SWNIRS for Dry Matter and Colour |
| title_full | Robustness of Tomato Quality Evaluation Using a Portable Vis-SWNIRS for Dry Matter and Colour |
| title_fullStr | Robustness of Tomato Quality Evaluation Using a Portable Vis-SWNIRS for Dry Matter and Colour |
| title_full_unstemmed | Robustness of Tomato Quality Evaluation Using a Portable Vis-SWNIRS for Dry Matter and Colour |
| title_short | Robustness of Tomato Quality Evaluation Using a Portable Vis-SWNIRS for Dry Matter and Colour |
| title_sort | robustness of tomato quality evaluation using a portable vis swnirs for dry matter and colour |
| url | http://dx.doi.org/10.1155/2017/2863454 |
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