Polyuronide content and correlation to optical properties measured by time-resolved reflectance spectroscopy in ‘Jonagored’ apples stored in normal and controlled atmosphere

Vanoli, M.; Zerbini, P. Eccher; Spinelli, Lorenzo; Torricelli, Alessandro; Rizzolo, A.

doi:10.1016/j.foodchem.2009.01.081

Cited by 36 publications

(22 citation statements)

References 39 publications

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“…After 20 days of storage, CAS was able to maintain fruit firmness significantly better than MAP and this trend continued during further storage, indicating the superiority of continuous atmospheric maintenance. On day 40, tomato firmness in Siddiqui et al (1996) and Vanoli et al (2009), who found lower rate of firmness loss in apples during the storage period in CAS compared to Cold storage. Cenci et al (1997) also reported that CAS treatment enhances the retention of textural properties by preventing the synthesis of cell wall degrading enzymes.…”

Section: Firmnessmentioning

confidence: 94%

Tomato quality in controlled atmosphere storage, modified atmosphere packaging and cold storage

et al. 2012

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Effects of controlled atmosphere storage (CAS) and modified atmosphere packaging (MAP) in comparison with conventional cold storage on qualitative properties of green-mature harvested tomato were evaluated. Qualitative properties included firmness, redness value (a*), hue angle, Total Soluble Solids (TSS) content, Titratable Acidity (TA) and TSS/TA. Under CAS and MAP conditions, gas composition was 5 kPa O 2 and 3 kPa CO 2 . Results showed that the ability of CAS and MAP to retard the ripening process was more than cold storage. With regard to maintaining texture and colour, CAS treatment was the best and MAP was better than cold storage. Although amongst storage treatments, the maximum value of TSS was observed in cold storage, its decreasing trend in CAS was slower than that in cold storage. Additionally, MAP and especially CAS slowed down the diminishing trend of TA in tomatoes.

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Section: Firmnessmentioning

confidence: 94%

Tomato quality in controlled atmosphere storage, modified atmosphere packaging and cold storage

et al. 2012

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“…In previous studies, significant changes in the fruit optical parameters were measured by TRS in the postharvest period (e.g. in nectarine, plum and apple) depending on storage conditions (Vanoli et al , Rizzolo et al , Lurie et al , Vangdal et al ). Similarly, we would expect that changes in the optical properties appear during fruit development on the tree.…”

Section: Introductionmentioning

confidence: 99%

Optical properties of developing pip and stone fruit reveal underlying structural changes

Seifert

Zude

Spinelli

et al. 2014

Physiologia Plantarum

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Analyzing the optical properties of fruits represents a powerful approach for non-destructive observations of fruit development. With classical spectroscopy in the visible and near-infrared wavelength ranges, the apparent attenuation of light results from its absorption or scattering. In horticultural applications, frequently, the normalized difference vegetation index (NDVI) is employed to reduce the effects of varying scattering properties on the apparent signal. However, this simple approach appears to be limited. In the laboratory, with time-resolved reflectance spectroscopy, the absorption coefficient, μa , and the reduced scattering coefficient, μs ', can be analyzed separately. In this study, these differentiated optical properties were recorded (540-940 nm), probing fruit tissue from the skin up to 2 cm depth in apple (Malus × domestica 'Elstar') and plum (Prunus domestica 'Tophit plus') harvested four times (65-145 days after full bloom). The μa spectra showed typical peak at 670 nm of the chlorophyll absorption. The μs ' at 670 nm in apple changed by 14.7% (18.2-15.5 cm(-1) ), while in plum differences of 41.5% (8.5-5.0 cm(-1) ) were found. The scattering power, the relative change of μs ', was zero in apple, but enhanced in plum over the fruit development period. This mirrors more isotropic and constant structures in apple compared with plum. For horticultural applications, the larger variability in scattering properties of plum explains the discrepancy between commercially assessed NDVI values or similar indices and the absolute μa values in plum (R < 0.05), while the NDVI approach appeared reasonable in apple (R ≥ 0.80).

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“…In the past decade, investigations for measuring tissue absorption and scattering coefficients of agro-products became popular for the previously mentioned reasons. Much attention was paid to the optical properties of apples perhaps because of the universality of this crop (Cubeddu et al, 2001a;2001b;Zerbini et al, 2002;Qin and Lu, 2008;Vanoli et al, 2009;Lu et al, 2010;Rizzolo et al, 2010). Other fruits (peach (Cen et al, 2012), pear (Zerbini et al, 2002), plum (Qin and Lu, 2008), etc.)…”

Section: Introductionmentioning

confidence: 99%

Investigation of absorption and scattering characteristics of kiwifruit tissue using a single integrating sphere system

Fang

2016

J. Zhejiang Univ. Sci. B

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Abstract:For a quantitative understanding of light interaction with fruit tissue, it is critical to obtain two fundamental parameters: the absorption coefficient and the scattering coefficient of the tissue. This study was to investigate the optical properties of kiwifruit tissue at the wavelength of 632.8 nm. The total reflectance and total transmittance of kiwifruit tissue from three parts (including the flesh part, the seed part, and the seed-base part) were measured using a single integrating sphere system. Based on the measured spectral signals, the absorption coefficient μ a and the reduced scattering coefficient μ s ' of kiwifruit tissue were calculated using the inverse adding-doubling (IAD) method. Phantoms made from Intralipid 20% and India ink as well as a Biomimic solid phantom were used for system validation.The mean values of μ a and μ s ' of different parts of the kiwifruit were 0.031-0.308 mm −1 and 0.120-0.946 mm −1 , respectively. The results showed significant differences among the μ a and μ s ' of the three parts of the kiwifruit. The results of this study confirmed the importance of studying the optical properties for a quantitative understanding of light interaction with fruit tissue. Further investigation of fruit optical properties will be extended to a broader spectral region and different kinds of fruits.

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Polyuronide content and correlation to optical properties measured by time-resolved reflectance spectroscopy in ‘Jonagored’ apples stored in normal and controlled atmosphere

Cited by 36 publications

References 39 publications

Tomato quality in controlled atmosphere storage, modified atmosphere packaging and cold storage

Tomato quality in controlled atmosphere storage, modified atmosphere packaging and cold storage

Optical properties of developing pip and stone fruit reveal underlying structural changes

Investigation of absorption and scattering characteristics of kiwifruit tissue using a single integrating sphere system

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