Awareness and knowledge of allergens: A need and a challenge to assure a safe and healthy consumption of small fruits

Laimer, Margit; Maghuly, Fatemeh

doi:10.3233/br-2010-012

Cited by 7 publications

(7 citation statements)

References 74 publications

(119 reference statements)

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“…Of all investigated cultivars, the highest Fra a 1 level was determined in Florika F. × vescana obtained by cross-breeding F. × ananassa × F. vesca . Due to crossing of cultivated strawberries with wild species nutritional properties may altered as well as unfavorable compounds such as food allergen [ 37 ]. Overall, the colorless fruited cultivars showed varying Fra a 1 levels between 0.67 and 2.13 µg/g FW verifying recent results, that white-fruited strawberries do not always show reduced Fra a 1 levels [ 12 ].…”

Section: Discussionmentioning

confidence: 99%

Effect of the Strawberry Genotype, Cultivation and Processing on the Fra a 1 Allergen Content

et al. 2018

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Birch pollen allergic patients show cross-reactivity to vegetables and fruits, including strawberries (Fragaria × ananassa). The objective of this study was to quantify the level of the Fra a 1 protein, a Bet v 1-homologous protein in strawberry fruits by a newly developed ELISA, and determine the effect of genotype, cultivation and food processing on the allergen amount. An indirect competitive ELISA using a specific polyclonal anti-Fra a 1.02 antibody was established and revealed high variability in Fra a 1 levels within 20 different genotypes ranging from 0.67 to 3.97 µg/g fresh weight. Mature fruits of red-, white- and yellow-fruited strawberry cultivars showed similar Fra a 1 concentrations. Compared to fresh strawberries, oven and solar-dried fruits contained slightly lower levels due to thermal treatment during processing. SDS-PAGE and Western blot analysis demonstrated degradation of recombinant Fra a 1.02 after prolonged (>10 min) thermal treatment at 99 °C. In conclusion, the genotype strongly determined the Fra a 1 quantity in strawberries and the color of the mature fruits does not relate to the amount of the PR10-protein. Cultivation conditions (organic and conventional farming) do not affect the Fra a 1 level, and seasonal effects were minor.

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Section: Discussionmentioning

confidence: 99%

Effect of the Strawberry Genotype, Cultivation and Processing on the Fra a 1 Allergen Content

et al. 2018

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“…The apple's domestication led to thousands of cultivars with different properties in colour, size, taste and allergen content. Different apple cultivars differ in their Mal d1 content, but Mal d1 content also varies within the apple increasing from flesh to peel and stem near peel . Previous studies associated high Mal d 1 content with an increased allergenic potential .…”

Section: Introductionmentioning

confidence: 99%

“…Different apple cultivars differ in their Mal d1 content, but Mal d1 content also varies within the apple increasing from flesh to peel and stem near peel. [12][13][14][15][16][17][18][19][20] Previous studies associated high Mal d 1 content with an increased allergenic potential. 13,21,22 The protein itself belongs to the pathogenesis-related (PR) 10 family, involved in plant pathogen defence.…”

Section: Introductionmentioning

confidence: 99%

Allergen‐specific immunotherapy with apples: selected cultivars could be a promising tool for birch pollen allergy

Nothegger

Reider

Covaciu

et al. 2020

Acad Dermatol Venereol

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Background Most birch pollen-allergic patients develop allergic cross-reactions to the major allergen found in apples Mal d1, known as pollen-related food allergy (prFA). This is due to a strong clinically relevant homology between the major allergen in birch Bet v 1 and Mal d 1. Daily apple consumption induces oral tolerance in prFA, but its effect on the inhalational allergy has not been investigated. Objectives As continuous apple consumption might also mitigate the inhalational allergy, this study aimed to uncover apple cultivars suitable for treatment of birch pollen rhinoconjunctivitis and apple allergy in a controlled and established dosage. Methods Patients (n = 52) with birch pollen allergy and prFA to apples were subjected to a prick-to-prick test (SPT) with 23 cultivars (red-fleshed, old traditional and new commercial). By SPT, the apple parts flesh, peel equatorial and peel apical near the stalk were compared for their reactivity. One apple cultivar of each allergenicity class (low, middle and high) was subsequently tested in an oral provocation test (OPT). Results According to the SPTs, we provide a ranking of all 23 cultivars. Red-fleshed apples displayed the lowest reactivity, followed by old and new cultivars. Four cultivars showed disagreement from their allergenicity class: Santana and Pink Ladyâ, new cultivars that provoked only low to moderate. In contrast, White Rosemary and Goldparm€ ane, two old cultivars, induced strong reactions. Skin reactivity increased from flesh to peel to stalk, and SPT results could predict the severity of prFA of each allergenicity class. Conclusions Herein, we propose a treatment protocol for allergen immunotherapy to birch pollen and prFA with daily apple consumption. Red-fleshed, old and the new cultivars Santana and Pink Ladyâ provoke less allergic reactions and are suitable for initial induction. After a controlled and well-tolerated increase of intake, also moderate and finally high allergenic apple cultivars should be integrated into treatment of birch pollen allergenic patients.

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“…There is little known about the effects of integrated farming systems on strawberry fruit quality. However, it should be remembered that the consumption of strawberries brings the risk of food allergies [15]. During the last decades, the prevalence of allergies has increased drastically, whereby 3-4% of the adult population and up to 6% of children are affected by food allergies [16].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Potential Allergenicity of Strawberries in Response to Different Farming Practices

et al. 2020

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Fruit allergies are a large problem today. Many consumers suffer from food allergies or intolerances. The method of food production has a major impact on its quality. In fruit and vegetable production, three different farming systems are mainly found: conventional, integrated pest management and organic production. The latter is considered the best in terms of fruits and vegetables safety and high quality. The present experiment was performed to demonstrate the effect of the strawberry production method on its allergenic properties and flavonoid content. The strawberry ‘Honeoye’ cv. was used for the study. Fruits from the three cultivation systems, organic, conventional and integrated, were tested for their content of biologically active compounds and their potential allergenicity. The results obtained indicate that the strawberries from the organic system were the safest because they contained the lowest levels of Bet v1 and profilin in comparison with the fruits from the integrated and conventional systems.

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Awareness and knowledge of allergens: A need and a challenge to assure a safe and healthy consumption of small fruits

Cited by 7 publications

References 74 publications

Effect of the Strawberry Genotype, Cultivation and Processing on the Fra a 1 Allergen Content

Effect of the Strawberry Genotype, Cultivation and Processing on the Fra a 1 Allergen Content

Allergen‐specific immunotherapy with apples: selected cultivars could be a promising tool for birch pollen allergy

Evaluation of the Potential Allergenicity of Strawberries in Response to Different Farming Practices

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