Some Physical Effects of Postharvest Gamma Radiation on the Fruit of Sweet Cherry, Blueberry, and Cranberry

Eaton, G. W.; Meehan, Connor; Turner, N. A.

doi:10.1016/s0008-3860(70)74311-0

Cited by 19 publications

(16 citation statements)

References 1 publication

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“…These results are consistent with the reduction of color at higher doses due to changes in pigmented cells. Similar findings were reported by Eaton et al (1970) on irradiated Coville and Dixi blueberry varieties with gamma rays at dosages between 1.0 and 0.5 kGy. The irradiated samples were considerably softer than the nonirradiated fruits.…”

Section: Article In Presssupporting

confidence: 89%

“…For example, Miller, Mitcham, & McDonald (1994) reported that Climax and Sharpblue blueberry cultivars tolerated gamma irradiation up to 0.75 kGy without a loss of fruit quality. Eaton, Meehan, & Turner (1970) found significant cultivar variation in the physiological response of high-bush blueberries to gamma irradiation at doses from 1.0 to 5.0 kGy. Hallman & Thomas (1999) reported that the prevention of phanerocephalic pupae of blueberry maggot at the 99% level was accomplished with the application of gamma irradiation at levels of 58 and 24 Gy.…”

Section: Introductionmentioning

confidence: 92%

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Quality of electron beam irradiation of blueberries (Vaccinium corymbosum L.) at medium dose levels (1.0–3.2 kGy)

Moreno

Castell‐Perez

Gomes

et al. 2007

LWT - Food Science and Technology

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Section: Article In Presssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 92%

Quality of electron beam irradiation of blueberries (Vaccinium corymbosum L.) at medium dose levels (1.0–3.2 kGy)

Moreno

Castell‐Perez

Gomes

et al. 2007

LWT - Food Science and Technology

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“…However, with 'Climax' berries we did not observe changes in TSS and peel color as reported for 2 of the 6 highbush blueberry cultivars that were treated at 1 kGy by Eaton et al (1970). In this study we used lower dosage and had fewer increments within the range of dose compared to our previous study in 1991.…”

Section: Discussionmentioning

confidence: 47%

“…Irradiation in conjunction with cold storage is effective for extending shelf-life and decay control of strawberry (Somher et al 1968;Zegota 1988). Eaton et al (1970) found the effect of irradiation to be cultivar dependent for cherries and highbush blueberries. Using dosages from 1.0 to 5.0 kGy on six cultivars, they found significant differences by cultivar for berry color, soluble solids, and fruit softening.…”

Section: Introductionmentioning

confidence: 99%

Quality of ‘Climax’ Blueberries After Low Dosage Electron Beam Irradiation

Miller

McDonald

McCollum

et al. 1994

Journal of Food Quality

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Fruit of 'Climax' rabbiteye blueberries (Vaccinium ashei Reade) were irradiated by a linear accelerator at 0, 0.25, 0.5, 0.75, 1.0, and 1.25 kGy and evaluated for various quality attributes after storage for 1, 3, 7, or 14 days at ICpEus 2 days at 15C, respectively. Weight loss increased during storage and averaged 4.2 % after the final inspection and was not affected by irradiation dosage. About 5 % of total berries were decayed after 14 days at 1 C, about 6 % after the final inspection at 15C, but decay was not affected by the level of irradiation. Electrolyte leakage, skin color, total soluble solids, acidity, and pH were also not affected by irradiation dosage. There was a signifcant decline in b e r y firmness, jlawr, and texture as dosage increased. Berries treated at 1 .O kGy or above were softer and had lower jlavor and texture preference scores than berries treated at lower dosages or nontreated berries.

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“…The effectiveness of low‐dose (<1.0 kGy) gamma irradiation to disinfect fruits without loss of quality has been demonstrated (Eaton et al. 1970; Miller et al.…”

Section: Introductionmentioning

confidence: 99%

TREATMENT OF CULTIVATED HIGHBUSH BLUEBERRIES (VACCINIUM CORYMBOSUM L.) WITH ELECTRON BEAM IRRADIATION: DOSIMETRY AND PRODUCT QUALITY

Moreno¹,

Castell‐Perez

Gomes

et al. 2008

J Food Process Engineering

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We determined the dose distribution within a tray of highbush blueberries (Vaccinium corymbosum L.) exposed to electron beam irradiation at medium levels (1.0–3.2 kGy) using Monte Carlo and computer tomography scanning technology. We also evaluated the quality of irradiated and nonirradiated (control) fruits stored at 5C and 70% relative humidity during 14 days by a series of chemical analyses. Blueberries packed in plastic clamshell containers (trays) were irradiated using a 10‐MeV linear accelerator with single‐beam fixture (top only). Irradiation of blueberries at 1.1 kGy had no significant (P > 0.05) effect on the fruit quality with the exception of ascorbic acid, which decreased by 17% by the end of storage. Irradiation had an enhancing effect on the total phenolic and tannin content of all the irradiated fruits (10–20% increases). The calculated dose distribution in a pack of blueberries confirmed that the dose is not uniformly distributed within the pack because of density inhomogeneities (flesh, skin air). Dose levels at the bottom of the trays were 18 (±8%) higher than at the top. These results suggest that careful dose distribution examination must be conducted prior to setting up of an irradiation run for the packed fruits. Excellent agreement was found between measured and calculated doses at different electron beam conveyor speeds. PRACTICAL APPLICATIONS Little information is available on how electron beam irradiation penetrates a complex medium such as packed blueberries. This study presents unique results from a dose distribution calculation method using Monte Carlo simulation and computed tomography scanning techniques, which can be an effective tool for the development of proper irradiation treatment planning of packed fruits and other fresh produce. The suitability of using electron beam technology to preserve the quality characteristics and shelf life of packed blueberries was verified.

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Some Physical Effects of Postharvest Gamma Radiation on the Fruit of Sweet Cherry, Blueberry, and Cranberry

Cited by 19 publications

References 1 publication

Quality of electron beam irradiation of blueberries (Vaccinium corymbosum L.) at medium dose levels (1.0–3.2 kGy)

Quality of electron beam irradiation of blueberries (Vaccinium corymbosum L.) at medium dose levels (1.0–3.2 kGy)

Quality of ‘Climax’ Blueberries After Low Dosage Electron Beam Irradiation

TREATMENT OF CULTIVATED HIGHBUSH BLUEBERRIES (VACCINIUM CORYMBOSUM L.) WITH ELECTRON BEAM IRRADIATION: DOSIMETRY AND PRODUCT QUALITY

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