Effect of postharvest irradiation with red light on epidermal color and carotenoid concentration in different parts of tomatoes

Panjai, Lachinee; Röhlen-Schmittgen, Simone; Ellenberger, Jan; Noga, Georg; Hunsche, Maurício; Fiebig, Antje

doi:10.1007/s11694-020-00770-0

Cited by 11 publications

(5 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the two supplementary light treatments had no significant effect on the accumulation of lutein in fruit (Figure 5). This is similar to the results of Dannehl et al (26) and Panjai et al (49); they treated tomatoes with full spectrum LED and red-light LED, respectively, and found that lycopene and beta carotene in tomato fruit increased significantly after the treatments with LEDs.…”

Section: Discussionsupporting

confidence: 90%

Response of Tomato Fruit Quality Depends on Period of LED Supplementary Light

Wang

Jin

et al. 2022

Front. Nutr.

View full text Add to dashboard Cite

Light is an important environmental factor that regulates the activity of metabolism-related biochemical pathways during tomato maturation. Using LED to improve lighting conditions during the process of tomato growth and development is a feasible and efficient method to improve the quality of tomato fruit. In this study, red and blue LEDs were used to supplement light on “MicroTom” tomato plants for different periods of time in the morning and evening, and the differences between the primary and secondary metabolites and other nutrient metabolites in the tomato fruit were analyzed using liquid chromatography and liquid chromatography mass spectrometry and other methods. Supplementing light in the morning promoted the accumulation of vitamin C, organic acids, amino acids, carotenoids, phenolic acids, and other health-promoting substances in the tomato fruits. Supplementing light in the evening significantly increased the content of sugars, flavonoids, and aromatic substances in tomato fruits, whereas the promoting effect of LED on the accumulation of amino acids and carotenoids was lower in the evening than in the morning. Both morning and evening light supplementation reduced the mineral content of fruit. In conclusion, morning light supplementation improved the nutritional quality of tomato fruits, while evening light supplementation improved their flavor.

show abstract

Section: Discussionsupporting

confidence: 90%

Response of Tomato Fruit Quality Depends on Period of LED Supplementary Light

Wang

Jin

et al. 2022

Front. Nutr.

View full text Add to dashboard Cite

show abstract

“…Reflectance value is below 0.1 from 400 to 575 nm as previously detected by ElMasry and Sun ( 52 ), including an intense absorption peak between 450 and 475 nm as found by Ciaccheri et al ( 53 ). Above 560 nm, reflectance values rose sharply because of the red coloration of ripened fruits ( 54 ). The variability of spectra was the highest in the Vis-NIR region between 650 and 930 nm.…”

Section: Resultsmentioning

confidence: 99%

Prediction of Soluble Solids and Lycopene Content of Processing Tomato Cultivars by Vis-NIR Spectroscopy

et al. 2022

View full text Add to dashboard Cite

Tomato-based products are significant components of vegetable consumption. The processing tomato industry is unquestionably in need of a rapid definition method for measuring soluble solids content (SSC) and lycopene content. The objective was to find the best chemometric method for the estimation of SSC and lycopene content from visible and near-infrared (Vis-NIR) absorbance and reflectance data so that they could be determined without the use of chemicals in the process. A total of 326 Vis-NIR absorbance and reflectance spectra and reference measurements were available to calibrate and validate prediction models. The obtained spectra can be manipulated using different preprocessing methods and multivariate data analysis techniques to develop prediction models for these two main quality attributes of tomato fruits. Eight different method combinations were compared in homogenized and intact fruit samples. For SSC prediction, the results showed that the best root mean squared error of cross-validation (RMSECV) originated from raw absorbance (0.58) data and with multiplicative scatter correction (MSC) (0.59) of intact fruit in Vis-NIR, and first derivatives of reflectance (R2 = 0.41) for homogenate in the short-wave infrared (SWIR) region. The best predictive ability for lycopene content of homogenate in the SWIR range (R2 = 0.47; RMSECV = 17.95 mg kg–1) was slightly lower than that of Vis-NIR (R2 = 0.68; 15.07 mg kg–1). This study reports the suitability of two Vis-NIR spectrometers, absorbance/reflectance spectra, preprocessing methods, and partial least square (PLS) regression to predict SSC and lycopene content of intact tomato fruit and its homogenate.

show abstract

“…They also reported that high-dose UV (A-B) applications caused tissue damage and carotenoid degradation while the visible light applications increased the carotenoid biosynthesis. In another recent study (Panjai et al, 2021), the continuous red-light applied for 21 days resulted in the highest secondary metabolite concentration. They recommended that the continuous exposure of the epicarp layer to red light was an effective method to accelerate color development and fruit ripening and that red light played a role in stimulating the inner layer of the endocarp to provide useful secondary metabolite compounds.…”

Section: Introductionmentioning

confidence: 86%

Drying of tomato pomace in daylight simulated photovoltaic‐assisted drying system: Effects of daylight intensity and application mode

Bayana

İçıer

2022

J Food Process Engineering

View full text Add to dashboard Cite

It was aimed to dry a by-product of tomato paste production (tomato pomace) by minimizing the losses valuable components and reducing energy consumption. In this concept, a daylight simulated photovoltaic-assisted dryer (DPVD) applying the daylight in different modes and intensities during drying was custom-designed. The effects of daylight applications on the change of some quality characteristics of tomato pomace and system performance characteristics were investigated, and the optimum drying condition was determined. The process conditions included the combination of three different daylight application modes (UV-blocked daylight via solar tube-DLST, DLST + LED, and LED) and three different daylight intensities (2,500, 7,500, and 10,000 lux). The drying was applied for 240 min at constant air temperature (60 C) with an air velocity of 2 m/s. The moisture content and the water activity values of dried tomato pomace were 8.86 ± 2.00% and 0.57 ± 0.10%, respectively.The lycopene and β-carotene losses after drying were determined as 68.36 ± 4.32% and 65.66 ± 4.33%, respectively. The energy and exergy efficiencies of the system were in the range of 19.56%-35.73% and 5.10%-17.05%, respectively. The optimum condition meeting the criteria of superior quality and high-performance characteristics was obtained by applying DLST at 7,500 lux (desirability 0.728). In the performance improvement studies, it has been concluded that all the energy required for the process could have been fulfilled as 100% from solar energy with the support of photovoltaic panels. In other words, it was demonstrated that the developed DPVD system could be used to dry the tomato pomace not only in terms of providing high food quality and safety, but also in terms of having high energy efficiency. Practical applicationsExposure to the daylight is important to dry some foods. Especially in north countries, products are dried in artificial dryers, but it requires high energy consumption.In this study, the daylight transfer system was integrated into the artificial dryer for the purpose of using daylight effect in addition to the photovoltaic (PV) assistance for using solar energy. During periods when the solar thermal effect is not intense or in countries where the sun effect is limited, it will be possible to dry food products

show abstract

Effect of postharvest irradiation with red light on epidermal color and carotenoid concentration in different parts of tomatoes

Cited by 11 publications

References 33 publications

Response of Tomato Fruit Quality Depends on Period of LED Supplementary Light

Response of Tomato Fruit Quality Depends on Period of LED Supplementary Light

Prediction of Soluble Solids and Lycopene Content of Processing Tomato Cultivars by Vis-NIR Spectroscopy

Drying of tomato pomace in daylight simulated photovoltaic‐assisted drying system: Effects of daylight intensity and application mode

Contact Info

Product

Resources

About