Using visible and near infrared diffuse transmittance technique to predict soluble solids content of watermelon in an on-line detection system

Jie, Dengfei; Xie, Lijuan; Rao, Xiuqin; Ying, Yibin

doi:10.1016/j.postharvbio.2013.11.009

Cited by 81 publications

(32 citation statements)

References 14 publications

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“…Recently, much attention has been paid on online detection of SSC using Vis/NIR spectroscopy. Several studies about online SSC determination using diffuse transmittance mode were reported for fruits such as pear (Sun et al 2009;Xu et al 2012) and watermelon with thick skin (Jie et al 2014), which indicated that diffused transmittance mode was suitable for internal quality determination and was a viable option for high-speed fruit measurement. Therefore, a prototype of diffused transmittance system was realized in our laboratory to provide some reference for the online detection of apple SSC.…”

Section: Introductionmentioning

confidence: 99%

“…It was found that the MLR calibration model built using GA-SPA on 18 selected wavelengths exhibited coefficient of determination r 2 pre =0.880 and root mean square error of prediction (RMSEP)=0.459°Brix for the prediction set. Jie et al (2014) investigated Vis/NIR diffuse transmission spectrum of 687-920 nm region for online determination of SSC of watermelon. They found that the MC-UVE-SMLR calibration model with baseline offset correction pretreatment was the best with r pre of 0.70 and RMSEP of 0.33°Brix for the prediction set.…”

Section: Introductionmentioning

confidence: 99%

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Using Vis/NIR Diffuse Transmittance Spectroscopy and Multivariate Analysis to Predicate Soluble Solids Content of Apple

et al. 2015

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The objectives of this research were to compare the effect of different fruit orientations on the quality of acquired spectra and to provide a suitable calibration model for further online determination of soluble solids content (SSC) of BFujiâ pples using visible and near-infrared (Vis/NIR) diffuse transmittance. The diffuse transmittance spectra between 650 and 910 nm were collected with the designed spectrum measurement system in two fruit orientations: stem-calyx axis horizontal (T1) and stem-calyx axis vertical (T2). Area change rate (ACR) was used to evaluate the stability of spectra collected in two fruit orientations. Results showed that the fruit orientation T1 was better for our designed spectrum measurement system. Then, the performance of partial least squares (PLS) models based on spectral data after the pretreatment of several preprocessing methods was analyzed and compared. Finally, the modified competitive adaptive reweighted sampling (MCARS), successive projection algorithm (SPA), and their combination were investigated to select the effective variables for the determination of SSC. It concluded that the MCARS-SPA-PLS model based on the spectra after preprocessing of Savitzky-Golay (SG) smoothing achieved better results for SSC prediction. The correlation coefficients between measured and predicted SSC were 0.962 and 0.946, and the root mean square errors were 0.510 and 0.527°Brix for calibration and prediction set, respectively. Moreover, the physicochemical properties of 27 variables selected by MCARS-SPA were discussed to obtain a better interpretation of the calibration model. The overall results indicated that the designed diffuse transmittance spectrum measurement system together with the PLS calibration model with 27 effective variables selected by MCARS-SPA method had a potential application for online SSC detection of apple.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Using Vis/NIR Diffuse Transmittance Spectroscopy and Multivariate Analysis to Predicate Soluble Solids Content of Apple

et al. 2015

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“…Sugar content is an important determinant of fruit quality, for example it is a key factor that determines the eating quality of watermelons [26]. We detected a rapid decrease in soluble solids appeared in all samples during the storage period (Fig.…”

Section: Fruit Firmness and Soluble Solidsmentioning

confidence: 68%

Alternating Magnetic Field Prior to Cutting Reduces Wound Responses and Maintains Fruit Quality of Cut cucumis melo L. cv Hetao

Jia¹,

Wang²,

Lv³

et al. 2015

TOBIOTJ

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The quality of fruit targeted for human consumption is affected greatly by the methods used in processing. The objective of this study was to assess a method of treating cantaloupe melons to reduce the wound responses incurred by cutting while maintaining fruit quality. After being treated with an alternating magnetic field (AMF) at the strength of 2mT for 0, 5, 10, 15, 20, or 25 min, Cucumis melo fruits were cut longitudinally into five pieces and stored at 5°C until analysis. The rates of decomposition, electrolyte leakage and respiration, were determined along with fruit firmness, soluble solids and titratable acids. Cutting the melons damaged the quality of fruits, as indicated by lower firmness soluble solids, higher electrolyte leakage, decomposition, respiration and titratable acids in cut slices compared to intact melons. Treatment with AMF before cutting influenced all parameters above, compared to untreated samples, and treatment with 2mT for 15 min resulted in reduced respiration rates, lower electrolyte leakage, delayed softening and decomposition, and reduced flows of soluble solids and titratable acid. Therefore, application of AMF treatment prior to cutting is beneficial for reducing wound responses and maintaining quality and flavor of cut Cucumis melo L. cv, which could provide a useful means to increase the market share of this popular fruit crop species.

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“…Analyzing the material based on specific physical and chemical reactions and metrological relationships has the characteristics such as high precision, cumbersome operation, time-consuming, destructive and high reagents cost [2,3] . Presently, many fast non-destructive testing technologies are gradually replacing the traditional chemical testing in some fields, especially, image processing technology based on machine vision has been widely used in the determination of moisture and total sugar content [4][5][6][7] . Wattanavicheanand et al [8] analyzed maturity of 'Kao Nampheung' pummelo by measuring both size and density of oil glands on the fruit surface with a developed image processing program.…”

Section: Introductionmentioning

confidence: 99%

Analysis of moisture and total sugar content of Huizao based on surface images

Zhang

et al. 2018

International Journal of Agricultural and Biological Engineering

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Moisture and total sugar content are two important internal qualities of Huizao. In order to explore their correlation with external qualities, a novel method of moisture and total sugar content analysis was proposed based on surface images. Firstly, five geometric features and seven texture features of Huizao were obtained to be the external quality indexes by digital image processing technology. Secondly, the wrinkle degree as an important index was extracted by marked watershed segmentation algorithm. According to the external quality the Huizao samples were grouped, and the moisture and total sugar content were determined through physical and chemical methods. Lastly, the moisture and total sugar content and twelve external indexes were all processed by step discriminatory analysis. Meanwhile, the regression models of moisture content with short diameter, contrast, and wrinkle degree and total sugar with wrinkle degree were established. The coefficients of the model were 0.9992 and 0.9978 respectively, and all the significance was less than 0.01, which show that the regression equation and regression coefficient effect are highly significant. The results indicate that the moisture and total sugar content of Huizao are greatly correlated with the wrinkle degree. The moisture and total sugar content are the highest when the wrinkle degree is at 2 to 3 grade, and they decrease gradually with the wrinkle degree increasing. Moisture content shows positive correlation with the size of Huizao. The results of model analysis agree well with the experimental results, which can provide valuable reference for improving Huizao grade diversity.

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Using visible and near infrared diffuse transmittance technique to predict soluble solids content of watermelon in an on-line detection system

Cited by 81 publications

References 14 publications

Using Vis/NIR Diffuse Transmittance Spectroscopy and Multivariate Analysis to Predicate Soluble Solids Content of Apple

Using Vis/NIR Diffuse Transmittance Spectroscopy and Multivariate Analysis to Predicate Soluble Solids Content of Apple

Alternating Magnetic Field Prior to Cutting Reduces Wound Responses and Maintains Fruit Quality of Cut cucumis melo L. cv Hetao

Analysis of moisture and total sugar content of Huizao based on surface images

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