Efficacy of instrumental measurements for determination of minimum requirements of firmness, soluble solids, and acidity of several apple varieties in comparison to consumer expectations

Hoehn, E.; Gasser, F.; Guggenbühl, Barbara; Künsch, U.

doi:10.1016/s0925-5214(02)00190-4

Cited by 122 publications

(92 citation statements)

References 30 publications

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“…Whereas, apple samples that were collected for the first time and kept for six months under cold storage, were not analysed due to physiological disorders. According to Hoehn et al (2003), acceptable eating quality for 'Golden Delicious' apples should attain a minimum of 12% for total soluble solids.…”

Section: Resultsmentioning

confidence: 99%

Effect of storage technology on the chemical composition of apples of the cultivar ‘Auksis’

Radenkovs

Juhnevica-Radenkova

2017

Zemdirbyste-Agriculture

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In this study, we evaluated the influence of 1-methylcyclopropene (1-MCP) treatment and ultra-low oxygen (ULO)-controlled atmosphere conditions: 2.0% CO 2 and 1.0% O 2 (ULO1), and 2.5% CO 2 and 1.5% O 2 (ULO2) on the changes in chemical composition in the apples of one of the commercially available and the most consumerpreferred cultivar 'Auksis' during long-term storage. This study was conducted from 2012 to 2014 at the Institute of Horticulture, Latvia University of Agriculture in Dobele. The results of the current research evidence that in many cases the chemical composition of 'Auksis' apples depends on the weather conditions (growing season) and storage technology. In terms of storage technology, a better preservation of soluble solids was achieved when ULO conditions and 1-MCP treatment were applied. Moreover, findings reveal that polyphenols present in 'Auksis' apples remained unchanged after six months' storage under ULO conditions. While due to further ripening process in control and 1-MCP treated apples the content of polyphenols increased. The harvest time is the key factor influencing the total pectin content, while, during six months' storage the main factors affecting the content of pectin were the growing season and storage technology. Analysis of variance showed that the content of vitamin C in 'Auksis' apples depended mainly on the weather conditions, whereas post-harvest vitamin C losses are affected by harvesting time and storage technology.

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Section: Resultsmentioning

confidence: 99%

Effect of storage technology on the chemical composition of apples of the cultivar ‘Auksis’

Radenkovs

Juhnevica-Radenkova

2017

Zemdirbyste-Agriculture

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“…However, this method is not always successful in bringing the uniformed ripening of banana fruits because of its lacking monitoring system. Firmness is a very good indicator in determining the quality of products, and it has been used to measure maturity and ripeness of fruit [5]. Usually, a penetrometer is used to measure firmness of fruits and it is a destructive method.…”

Section: Introductionmentioning

confidence: 99%

Dielectric Based Sensing System for Banana Ripeness Assessment

Jamaludin¹,

Aziz²,

Ibrahim³

2014

IJESD

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Abstract-Banana is an extremely perishable fruit thus post-harvest quality process changes quickly. Conventional banana ripeness assessment include sorting and grading based on human visual evaluation, ethylene hormone treatment, firmness check by penetrometer and soluble solid content measurement using refractometer are not effective to give uniform and quick result. Dielectric spectroscopy has been applied in agricultural materials as it offers relatively inexpensive assessment, nondestructive, fast and easy to operate system. In ripeness assessment, the magnitude phase of impedance value will increase with ripening stages over certain frequency. This study showed that impedance measurement was able to differentiate the unripe, ripe and overripe banana over the frequency of 20.1kHz to 30.1kHz. Soluble solid content (SSC) of banana was determined by developed model at the frequency of 21.1kHz.

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“…3 measurements were taken for each apple, and 5 apples were used for representing the each group. The amount of soluble dry matter was determined according to the refractometric method using an Abbe refractometer (2WAJ) (HOEHN et al, 2003).…”

Section: Methodsmentioning

confidence: 99%

“…Total acidity of the samples was determined according to TS 1125 in terms of malic acid (HOEHN et al, 2003).…”

Section: Methodsmentioning

confidence: 99%

Effect of holding period prior to storage on the chemical attributes of Starking Delicious apples during refrigerated storage

2012

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In this research, the effects of three different holding periods (6, 12 and 24 hours) prior to storage on the quality attributes of Starking Delicious apples were investigated during storage of 8 months at 0.5 ± 1.0 ºC. Changes in weight loss, flesh firmness, pH values, soluble dry matter amount, titratable acidity values, ascorbic acid contents, and total and reducing sugar content were determined. According to the results, the holding period showed statistically significant changes in the quality attributes of the apples (p < 0.05).

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Efficacy of instrumental measurements for determination of minimum requirements of firmness, soluble solids, and acidity of several apple varieties in comparison to consumer expectations

Cited by 122 publications

References 30 publications

Effect of storage technology on the chemical composition of apples of the cultivar ‘Auksis’

Effect of storage technology on the chemical composition of apples of the cultivar ‘Auksis’

Dielectric Based Sensing System for Banana Ripeness Assessment

Effect of holding period prior to storage on the chemical attributes of Starking Delicious apples during refrigerated storage

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