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A low-cost optical sensor to quantify bioactive compounds in fruit
This paper discusses the design, development and construction of a low cost system to measure plant-based bioactive compounds. The proposed system uses a light emitting diode (LED), an optical filter, a cuvette holder, a photodiode, an electronic board and a mechanical structure. The results are bas...
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Published in: | Journal of food measurement & characterization 2020-12, Vol.14 (6), p.3580-3589 |
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Main Authors: | , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | This paper discusses the design, development and construction of a low cost system to measure plant-based bioactive compounds. The proposed system uses a light emitting diode (LED), an optical filter, a cuvette holder, a photodiode, an electronic board and a mechanical structure. The results are based on transmittance and reflectance absorptiometric measurements. In order to evaluate the sensitivity of the prototype sensor it was tested against a commercial spectrophotometer. The two systems measured the bioactive compounds of a variety of different fruits (acerola, pineapple, plum, atemoya, banana, cashew apple, kiwi, pitomba, sapodilla, yellow mombin and grape). The coefficient r of the two systems were similar (r = 0.99 for total polyphenols, r = 0.95 for total flavonoids, r = 0.99 for ascorbic acid). Nevertheless, further research is required to improve the precision of this optical sensor, which has significant potential for industrial applications. |
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ISSN: | 2193-4126 2193-4134 |
DOI: | 10.1007/s11694-020-00601-2 |