Tomato quality based on colorimetric characteristics of digital images

Bello, Thaísa B.; Costa, Anderson Gomide; Silva, Thainara R. da; Paes, Juliana Lobo; Oliveira, Marcus Vinícius Moraes de

doi:10.1590/1807-1929/agriambi.v24n8p567-572

Cited by 7 publications

(3 citation statements)

References 23 publications

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“…Wang and Xing (2017) successfully evaluated fruit-quality parameters of tomatoes under different irrigation regimes and suggested that drip irrigation together with higher fertilization is a good choice in having highquality tomato fruit cultivation within greenhouse conditions (Wang and Xing, 2017). PCA analysis is a strong predictor for the classification in nutritional values of tomatoes by using various characteristics and used for metabolic profiling data of tomato fruits, for classification of tomato fruit quality via colorimetric and physicalchemical variables (explained variance with PCA is %97.01) and for evaluating some tomato collections in previous studies (Dimova and Krasteva, 2007;Abou Chehade et al, 2018;Bello et al, 2020). In this study, cluster and PCA analysis results were in support of each other.…”

Section: Principle Component Analysismentioning

confidence: 99%

Fruit mineral nutrient contents of field and greenhouse grown tomatoes and comparison with standard values

OZYIGIT,

CAN,

UYANIK

et al. 2024

Not Bot Horti Agrobo

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Tomato (Solanum lycopersicum L.) is a significant member of the Solanaceae family with substantial worldwide production. The nutritional content of vegetables affects their metabolic and quality characteristics positively or negatively in many aspects and is one of today’s important research areas. In this study, grown tomato samples collected from fields and greenhouses in nine different cities of Türkiye were analysed for boron, calcium, copper, iron, potassium, magnesium, manganese, sodium, and zinc concentrations using spectroscopy, compared with available studies in terms of fertilization/nutrient uptake status and it was decided whether there is a difference between tomato samples grown in the field and the greenhouse. The study revealed that there are differences between macro and microelement contents of the field and greenhouse-grown tomatoes. Greenhouse tomatoes have greater nutritional element contents since they are protected from external effects and pesticides, growing in a healthy and nutritionally rich manner. The lowest and highest concentrations (mg kg-1 dry weight) of mineral elements were boron (18.13-28.30), calcium (1277-1836), copper (4.60-9.45), iron (18.86-27.33), potassium (20384-22305), magnesium (1870-2107), manganese (10.12-23.27), Sodium (119.65-209.11) and zinc (15.55-25.41). As a result, tomatoes produced in Türkiye for export to various countries were found to be containing adequate macronutrients according to the relevant literature except for potassium, and micronutrients contents were found to be within the safe limits. Also, considering the percentage of daily Recommended Dietary Allowance values it provides, it can be said that tomatoes are a good source of micronutrients.

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Section: Principle Component Analysismentioning

confidence: 99%

Fruit mineral nutrient contents of field and greenhouse grown tomatoes and comparison with standard values

OZYIGIT,

CAN,

UYANIK

et al. 2024

Not Bot Horti Agrobo

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“…This is so in the cases of Khoje & Bodhe (2015), who determined the extent of damage to guava skin, Costa et al (2018), who determined the time of harvest of macaw palm fruits, and Leme et al (2019), who analyzed the degree of coffee roasting. Systems based on image processing and analysis have successfully evaluated characteristic patterns and predicted phenomena that would be difficult to perceive through visual analysis (Cruz & Silupu, 2014;Bello et al, 2020;Silva et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Estimation of percentage of impurities in coffee using a computer vision system

Costa

Silva

Barros

et al. 2022

Rev. bras. eng. agríc. ambient.

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The quality and price of coffee drinks can be affected by contamination with impurities during roasting and grinding. Methods that enable quality control of marketed products are important to meet the standards required by consumers and the industry. The purpose of this study was to estimate the percentage of impurities contained in coffee using textural and colorimetric descriptors obtained from digital images. Arabica coffee beans (Coffea arabica L.) at 100% purity were subjected to roasting and grinding processes, and the initially pure ground coffee was gradually contaminated with impurities. Digital images were collected from coffee samples with 0, 10, 30, 50, and 70% impurities. From the images, textural descriptors of the histograms (mean, standard deviation, entropy, uniformity, and third moment) and colorimetric descriptors (RGB color space and HSI color space) were obtained. The principal component regression (PCR) method was applied to the data group of textural and colorimetric descriptors for the development of linear models to estimate coffee impurities. The selected models for the textural descriptors data group and the colorimetric descriptors data group were composed of two and three principal components, respectively. The model from the colorimetric descriptors showed a greater capacity to estimate the percentage of impurities in coffee when compared to the model from the textural descriptors.

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“…

T omato is one of the main vegetables, fruit type, grown in Brazil and the second worldwide crop production (Bello et al, 2020). However, due to some aspects, such as weight loss, excessive maturity and high respiration rate, which lead to quick senescence, this vegetable has a short shelf life after harvest and an early fruit quality deterioration, resulting in a loss of 21% of the total production (Pirozzi et al, 2020).

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mentioning

confidence: 99%

Edible coating with microalgae and modified atmosphere packaging for post-harvest conservation of tomatoes

et al. 2023

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Tomato fruits are highly perishable. In this sense, adopting techniques to maintain and extend its shelf life is essential. Recent studies have used microalgae as an edible coating for fruit, as it is a nutrient-rich alternative and reduces fruit mass loss and respiration, delaying senescence. The aim of this study was to evaluate the application of microalgae-based coatings with or without the use of modified atmosphere packaging, polyvinyl chloride (PVC), in post-harvest tomato conservation. The design used was completely randomized, in a 4x2 factorial arrangement, with four coatings (no coating, coating composed of Spirulina platensis sp., Chlorella sp. and Scenedesmus sp.) and two conditions (with and without PVC), totalizing 8 treatments, with four replicates, consisting of one fruit each. Stored for 7 days at 10±2ºC and 55±5% UR and evaluated at harvest and on the last day of storage. The fruits coated with Chlorella sp. without PVC and Scenedesmus sp. associated with PVC, showed the lowest mass losses, representing a reduction of 73.79% and 78.47%, respectively, in relation to the control. In addition to mass loss, the levels of ascorbic acid (18.91 and 16.97 mg/100 g), citric acid (4.02 and 4.01), respectively, and the SS/AT ratio also stood out. The microalgae Chlorella sp. and Scenedesmus sp. can be used in coating ‘Santa Clara’ tomato fruits to maintain their physicochemical characteristics over 7 days of storage. The use of PVC film coating helped maintain these characteristics, reducing the perishability of the fruits.

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Tomato quality based on colorimetric characteristics of digital images

Cited by 7 publications

References 23 publications

Fruit mineral nutrient contents of field and greenhouse grown tomatoes and comparison with standard values

Fruit mineral nutrient contents of field and greenhouse grown tomatoes and comparison with standard values

Estimation of percentage of impurities in coffee using a computer vision system

Edible coating with microalgae and modified atmosphere packaging for post-harvest conservation of tomatoes

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