Effects of Excimer Fluorescent UV Lamps on Mold and Fruit Quality in Strawberries

Excimer fluorescent ultraviolet (UV) lamps (UV–228) function as mercury–free sources that use excimer emissions as excitation light sources. First, we evaluated the effects of UV–228–based irradiation (λ<sub>max</sub> = 228 nm) on the viability of fungi, using <i>Penicillium digita...

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Main Authors: Yujiro Takano, Ryuta Ninohei, Ayano Koike, Izumi Serizawa, Yuya Mochizuki
Format: Article
Language:English
Published: MDPI AG 2024-12-01
Series:AgriEngineering
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Online Access:https://www.mdpi.com/2624-7402/6/4/278
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author Yujiro Takano
Ryuta Ninohei
Ayano Koike
Izumi Serizawa
Yuya Mochizuki
author_facet Yujiro Takano
Ryuta Ninohei
Ayano Koike
Izumi Serizawa
Yuya Mochizuki
author_sort Yujiro Takano
collection DOAJ
description Excimer fluorescent ultraviolet (UV) lamps (UV–228) function as mercury–free sources that use excimer emissions as excitation light sources. First, we evaluated the effects of UV–228–based irradiation (λ<sub>max</sub> = 228 nm) on the viability of fungi, using <i>Penicillium digitatum</i>, and compared these effects with those of other light sources, such as OEL–222 (λ<sub>max</sub> = 222 nm) and GL–6 (λ<sub>max</sub> = 254 nm), to evaluate the effectiveness of the excimer fluorescent lamp. Next, we investigated the effects of UV–228–based irradiation on strawberry storage. Although UV–228 affected weight loss, Brix, ascorbic acid, polyphenol, and DPPH, the effects of UV irradiation for 5 min on strawberry fruit quality were minimal; i.e., only weight loss and ascorbic acid content were higher than those in the non–irradiated treatment. We found that 5 min of UV–C irradiation using UV–228 prevented mold emergence for up to 11 days of storage in strawberries These results indicate that UV–228 contributes to long–term strawberry storage.
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spelling doaj-art-c45ef9edeac74756aaa253e1a484cde72025-08-20T02:01:01ZengMDPI AGAgriEngineering2624-74022024-12-01644889490010.3390/agriengineering6040278Effects of Excimer Fluorescent UV Lamps on Mold and Fruit Quality in StrawberriesYujiro Takano0Ryuta Ninohei1Ayano Koike2Izumi Serizawa3Yuya Mochizuki4College of Agriculture, Ibaraki University, 3–21–1, Ami, Inashiki 300-0393, Ibaraki, JapanCollege of Agriculture, Ibaraki University, 3–21–1, Ami, Inashiki 300-0393, Ibaraki, JapanORC Manufacturing Co., Ltd., 3–9–6, Oyamagaoka, Machida 194-0295, Tokyo, JapanORC Manufacturing Co., Ltd., 3–9–6, Oyamagaoka, Machida 194-0295, Tokyo, JapanCollege of Agriculture, Ibaraki University, 3–21–1, Ami, Inashiki 300-0393, Ibaraki, JapanExcimer fluorescent ultraviolet (UV) lamps (UV–228) function as mercury–free sources that use excimer emissions as excitation light sources. First, we evaluated the effects of UV–228–based irradiation (λ<sub>max</sub> = 228 nm) on the viability of fungi, using <i>Penicillium digitatum</i>, and compared these effects with those of other light sources, such as OEL–222 (λ<sub>max</sub> = 222 nm) and GL–6 (λ<sub>max</sub> = 254 nm), to evaluate the effectiveness of the excimer fluorescent lamp. Next, we investigated the effects of UV–228–based irradiation on strawberry storage. Although UV–228 affected weight loss, Brix, ascorbic acid, polyphenol, and DPPH, the effects of UV irradiation for 5 min on strawberry fruit quality were minimal; i.e., only weight loss and ascorbic acid content were higher than those in the non–irradiated treatment. We found that 5 min of UV–C irradiation using UV–228 prevented mold emergence for up to 11 days of storage in strawberries These results indicate that UV–228 contributes to long–term strawberry storage.https://www.mdpi.com/2624-7402/6/4/278excimer lampfluorescent lampUV–C<i>Fragaria</i> × <i>ananassa</i> Duch.fruit quality
spellingShingle Yujiro Takano
Ryuta Ninohei
Ayano Koike
Izumi Serizawa
Yuya Mochizuki
Effects of Excimer Fluorescent UV Lamps on Mold and Fruit Quality in Strawberries
AgriEngineering
excimer lamp
fluorescent lamp
UV–C
<i>Fragaria</i> × <i>ananassa</i> Duch.
fruit quality
title Effects of Excimer Fluorescent UV Lamps on Mold and Fruit Quality in Strawberries
title_full Effects of Excimer Fluorescent UV Lamps on Mold and Fruit Quality in Strawberries
title_fullStr Effects of Excimer Fluorescent UV Lamps on Mold and Fruit Quality in Strawberries
title_full_unstemmed Effects of Excimer Fluorescent UV Lamps on Mold and Fruit Quality in Strawberries
title_short Effects of Excimer Fluorescent UV Lamps on Mold and Fruit Quality in Strawberries
title_sort effects of excimer fluorescent uv lamps on mold and fruit quality in strawberries
topic excimer lamp
fluorescent lamp
UV–C
<i>Fragaria</i> × <i>ananassa</i> Duch.
fruit quality
url https://www.mdpi.com/2624-7402/6/4/278
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AT ryutaninohei effectsofexcimerfluorescentuvlampsonmoldandfruitqualityinstrawberries
AT ayanokoike effectsofexcimerfluorescentuvlampsonmoldandfruitqualityinstrawberries
AT izumiserizawa effectsofexcimerfluorescentuvlampsonmoldandfruitqualityinstrawberries
AT yuyamochizuki effectsofexcimerfluorescentuvlampsonmoldandfruitqualityinstrawberries