Pear quality characteristics by Vis / NIR spectroscopy

Machado, Nicácia Portella; Fachinello, José Carlos; Galarça, Simone Padilha; Betemps, Débora Leitzke; Pasa, M.S.; Schmitz, Juliano Dutra

doi:10.1590/s0001-37652012000300027

Cited by 14 publications

(6 citation statements)

References 44 publications

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“…Full bloom occurred on September 26, 2009; Number of fruit per tree (NFT), counted at harvest; Soluble solids (SS -o brix) and; Flesh firmness (FF -kgf). The last two parameters were quantified by Vis/NIR reflectance spectroscopy (NIR-Case Sacmi), a non-destructive method for analyzing fruit quality previously calibrated for this cultivar (Machado et al, 2011). The data were analyzed regarding the normality by Shapiro-Wilk's test, the homogeneity of variances by Bartlett's test, and the independence of residues by graphical analysis.…”

Section: Methodsmentioning

confidence: 99%

Performance of ‘William’s’ pear grafted onto three rootstocks

et al. 2020

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Pears are the most imported fruit from Brazil and thus, being an important opportunity to Brazilian growers. However, there are still some problems that restrict pear production, such as the lack of suitable rootstocks. The aim of this study was to assess growth, yield efficiency and fruit quality of 'William's' pear grafted on quinces 'Champion' and 'Melliforme' and P. calleryana. The experiment was performed during 2009/2010 growing season at the Centro Agropecuário da Palma, FAEM/UFPel. The experimental design was a completely randomized block with three replications per treatment. The assessed parameters were trunk cross sectional area, shoot length, yield efficiency, number of fruit per tree, soluble solids, flesh firmness, fruit weight and fruit size. It was found that 'William's' pear is more efficient and less vigorous when grafted on 'Champion' quince, thus being a potential scion x rootstock combination for commercial pear planting at medium densities. Moreover, fruit of trees grafted on quince rootstocks accumulated higher amount of soluble solids.

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Section: Methodsmentioning

confidence: 99%

Performance of ‘William’s’ pear grafted onto three rootstocks

et al. 2020

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“…The use of two cucumber cultivars that have different genetic properties can increase the variation of the data so that the data range gets wider. It is suggested to increase the number of samples when dealing with heterogeneous samples for calibration with a larger range of values for the characteristic to be studied in order to increase the heterogeneity of the sample, and the greater the range, the better the consistency of the calibration (Machado 2012;VIAVI 2015).…”

Section: Measurement Of Cucumber Fruit Color Non-destructive Methods Umentioning

confidence: 99%

The color detection of two cucumber cultivars by NIR Spectroscopy

2017

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Abstract. Kusumiyati, Kurniasari I, Oktavia AR. 2017. The color detection of two cucumber cultivars by NIR Spectroscopy. Asian J Agric 1: 59-65. The color of cucumber fruit can be estimated as fruit quality trait. Genotypes and cultivars affect the color of cucumber fruit. The estimation can be done quickly and without tissue damage by NIR Spectroscopy. The purpose of this study was to determine the accuracy of color quality values with NIR and conventional methods. The experiment was conducted at Horticulture Laboratory, Faculty of Agriculture, Padjadjaran University in 2013. The color components observed were L, a, b, hue and chroma. The results indicated that the predicted component of cucumber color approximates values obtained from conventional methods. Based on the data obtained, the correlation coefficient (r) of color component approaches 1.00 and the standard calibration error (SEC) is low or close to 0.00.

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“…The results showed that developing models with the key spectral ranges and wavelengths are more robust compared with the standard partial least square (PLS) modeling using complete spectra. Machado et al (2012)…”

Section: Introductionmentioning

confidence: 99%

“…Machado et al. (2012) established calibration equations to determine soluble solids and pulp firmness of pears by the NIR spectroscopy. The results were significant for the soluble solids parameter, but it did not achieve satisfactory results for the pear pulp firmness of these cultivars.…”

Section: Introductionmentioning

confidence: 99%

Nondestructive determination of soluble solids content, firmness, and moisture content of “Longxiang” pears during maturation using near‐infrared spectroscopy

Liu

Wang

et al. 2022

Food Processing Preservation

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Nondestructive evaluation of the internal quality of pears during maturation is helpful to instruct production and give advice on harvesting. This study explores the feasibility of predicting the soluble solids content (SSC), firmness, and moisture content (MC) of pears during maturation stage using near-infrared (NIR) spectroscopy. The NIR spectra of 185 "Longxiang" pears were obtained in the wavelength range of 833-2500 nm. Partial least square (PLS) and least squares support vector machine (LSSVM) were used to develop determination models. The LSSVM obtained better performance than PLS, among which the FS-LSSVM model had the best prediction

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Pear quality characteristics by Vis / NIR spectroscopy

Cited by 14 publications

References 44 publications

Performance of ‘William’s’ pear grafted onto three rootstocks

Performance of ‘William’s’ pear grafted onto three rootstocks

The color detection of two cucumber cultivars by NIR Spectroscopy

Nondestructive determination of soluble solids content, firmness, and moisture content of “Longxiang” pears during maturation using near‐infrared spectroscopy

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