Effect of γ-Irradiation Combined with Washing and Waxing Treatment on Physicochemical Properties, Vitamin C, and Organoleptic Quality of<i>Citrus clementina</i>Hort. Ex. Tanaka

Mahrouz, Mostafa; Lacroix, Monique; D'Aprano, Giuseppe; Oufedjikh, Hafida; Boubekri, C.; Gagnon, M.

doi:10.1021/jf0116909

Cited by 28 publications

(20 citation statements)

References 12 publications

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“…Moreover, the critical ethanol level of 200 mg/100 mL of juice, which has been associated to build-up of off-flavors in citrus fruit (Ke and Kader, 1990;Hagenmaier, 2002), was not exceeded. These results are in agreement with those of other authors working with different mandarin cultivars (Abdellaoui et al, 1995;Miller et al, 2000;Mahrouz et al, 2002;Ladaniya et al, 2003;Alonso et al, 2004Alonso et al, , 2007. Nevertheless, volatile synthesis in response to irradiation has been found to be cultivar-dependent (Miller et al, 2000) and in some cases irradiation can lead to unacceptable contents.…”

Section: Discussionsupporting

confidence: 93%

“…In this and other studies (Miller et al, 2000;Boylston et al, 2002;Mahrouz et al, 2002;Alonso et al, 2004Alonso et al, , 2007, exposure to low temperature had a greater impact than irradiation on internal maturity and juice yield of citrus fruit. As expected, juice TA and SSC were lower and higher, respectively, in quarantine treated mandarins than at harvest.…”

Section: Discussionsupporting

confidence: 53%

“…Likewise, sensory evaluation (aroma and flavor) of 'Kau Gold' oranges was not affected by exposure to X-irradiation at 75 Gy (Boylston et al, 2002). Furthermore, Mahrouz et al (2002) reported a beneficial effect in sensorial and nutritive properties of 'Nour' mandarins irradiated at 300 Gy. Irradiated fruit were sweeter and had higher contents of vitamin C and total phenolic compounds.…”

Section: Discussionmentioning

confidence: 89%

“…postharvest treatments, storage conditions). As a function of these factors, no substantial effects or both beneficial (extension of shelf-life) and detrimental (rind injuries) effects have been reported for citrus fruit (Maxie et al, 1969;Miller et al, 2000;Mahrouz et al, 2002Mahrouz et al, , 2004Patil, 2004;Alonso et al, 2007). According to Follet and Neven (2006), since the effects of insecticidal treatments on treated produce can considerably differ depending on species and cultivar, varietal testing is essential to establish the tolerance of fruits and vegetables to different quarantine treatments.…”

Section: Introductionmentioning

confidence: 99%

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Combined postharvest X-ray and cold quarantine treatments against the Mediterranean fruit fly in "Clemenules" mandarins

Palou¹,

Río²,

Marcilla

et al. 2007

Span. j. agric. res.

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In the present work, survival of the Mediterranean fruit fly Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) on artificially infested 'Clemenules' clementine mandarins (Citrus reticulata Blanco) was assessed on fruit subjected to integrated quarantine treatments consisting of irradiation with X-rays at doses of 0 (control), 30, 54, and 164 Gy followed by exposure to 1°C for 0 (control), 3, 6, 9, or 12 days. Additionally, physico-chemical (rind color, firmness, and physiological disorders, soluble solids concentration, titratable acidity, maturity index, juice yield, and ethanol and acetaldehyde content) and sensory (sweetness, acidity, sensory maturity index, off-flavors, and mandarin-like flavor) fruit quality of 'Clemenules' clementines were assessed on X-irradiated fruit exposed to 1°C for 0 (control), 6, or 12 days. Complete insect mortality with no negative effects on fruit quality after 7 days at 20°C of shelf life was obtained on clementines firstly X-irradiated at 30 Gy and subsequently exposed to 1°C for 2 days. This combination of treatments considerably reduced quarantine time if compared to standard cold quarantine treatments (1.1-2.2°C for 14-18 days) and therefore showed promise as a potential commercial treatment for Spanish citrus exports.Additional key words: Ceratitis capitata, citrus disinfestation, clementines, fruit quality, integrated quarantine treatments, sensory analysis, X-irradiation. ResumenCombinación en poscosecha de rayos X y frío para el tratamiento cuarentenario de mandarinas 'Clemenules' contra la mosca mediterránea de la fruta En este trabajo se evaluó la supervivencia de la mosca mediterránea de la fruta Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) en mandarinas clementinas 'Clemenules' (Citrus reticulata Blanco) infestadas artificialmente y sometidas a la combinación de tratamientos ionizantes con rayos X a dosis bajas (0, 30, 54 y 164 Gy) con exposiciones a frío de corta duración (1°C durante 0, 2, 4, 6, 8, 10 ó 12 días). Adicionalmente, se determinó la calidad físico-química (color, firmeza y alteraciones fisiológicas de la corteza, concentración de sólidos solubles, acidez total, índice de madurez, rendimiento en zumo y contenidos de etanol y acetaldehído) y sensorial [dulzor, acidez, índice de madurez sensorial, malos sabores y 'flavor' (sabor + aroma)] de clementinas 'Clemenules' tratadas con rayos X y expuestas a 1°C durante 0 (control), 6 ó 12 días. Con frutos irradiados a 30 Gy y expuestos a 1°C durante 2 días se obtuvo una mortalidad completa de C. capitata sin efectos negativos en la calidad del fruto medida después de un período de simulación de la comercialización de 7 días a 20°C. Por tanto, esta combinación de tratamientos redujo sensiblemente los tiempos de cuarentena necesarios con los tratamientos de frío estándar (1,1-2,2°C durante 14-18 días) y mostró buen potencial como tratamiento comercial para los cítricos españoles de exportación.Palabras clave adicionales: análisis sensorial, calidad de fruto, Ceratitis capitata, clementinas, de...

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 53%

Section: Discussionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

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Combined postharvest X-ray and cold quarantine treatments against the Mediterranean fruit fly in "Clemenules" mandarins

Palou¹,

Río²,

Marcilla

et al. 2007

Span. j. agric. res.

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“…(Thomas, 1988). , (Mahrouz , 2002), (Mahmoud , 2010 *The concentration of Xanthomonas citri subsp. citri was 1.0 × 10 7 cfu/ml.…”

Section: Bio-testmentioning

confidence: 99%

Inactivation of Xanthomonas citri subsp. citri and Effect on Infection of Citrus Canker by Gamma Irradiation

Kim¹,

Song²,

Han³

et al. 2014

Research in Plant Disease

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Citrus canker caused by Xanthomonas citri subsp. citri (Xcc) has been quarantined by many countries in the world. Recently, the usage of methyl bromide should be limited, application by gamma irradiation on the agricultural production is raised as an alternative method. In this study, the level of gamma irradiation which could decrease of population of Xcc in the suspension or on the surface of citrus fruit was investigated. The D 10 value of Xcc, which is radiation dose required to reduce the number of the microorganism, was 55 and 28 Gy in the suspension and on the surface of citrus fruit, respectively. Furthermore, disease severity was suppressed on the citrus leaves inoculated with Xcc suspension pre-treated with gamma irradiation. Based on this study, it is suggested that Xcc on the citrus fruit could be eradicated by gamma irradiation and the results of this study may be valuable for application of gamma ray in quarantine activity.

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Phenolic compounds and the colour of oranges subjected to a combination treatment of waxing and irradiation

et al. 2004

Self Cite

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The effects of waxing, irradiation doses and storage on phenolic compounds and colour of irradiated oranges were investigated. Mature oranges (Citrus sinensis (L) Osbeck var Maroc late) waxed or unwaxed were treated with 0, 1 or 2 kGy radiation and stored up to 9 weeks at 20 • C and 40-50% RH. Colour of the oranges, total phenols and flavones in the peel were measured. Phenolic compounds increased with irradiation dose and storage time. Hue angle, L * value and chroma of the orange colour were more affected by waxing and storage time than the irradiation treatment. Changes in the phenolic compounds were linked with changes in the redness and saturation of the orange colour. Irradiation stimulated synthesis of flavones; waxing controlled changes induced by irradiation. These results may aid in maintaining the quality and safety of oranges during storage.

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Effect of γ-Irradiation Combined with Washing and Waxing Treatment on Physicochemical Properties, Vitamin C, and Organoleptic Quality ofCitrus clementinaHort. Ex. Tanaka

Cited by 28 publications

References 12 publications

Combined postharvest X-ray and cold quarantine treatments against the Mediterranean fruit fly in "Clemenules" mandarins

Combined postharvest X-ray and cold quarantine treatments against the Mediterranean fruit fly in "Clemenules" mandarins

Inactivation of Xanthomonas citri subsp. citri and Effect on Infection of Citrus Canker by Gamma Irradiation

Phenolic compounds and the colour of oranges subjected to a combination treatment of waxing and irradiation

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