ABSTRA ABSTRA ABSTRA ABSTRA ABSTRACT CT CT CT CT: A : A : A : A : Apple and or pple and or pple and or pple and or pple and orange juices packed in poly ange juices packed in poly ange juices packed in poly ange juices packed in poly ange juices packed in polyester bottles w ester bottles w ester bottles w ester bottles w ester bottles wer er er er ere stor e stor e stor e stor e stored in dar ed in dar ed in dar ed in dar ed in dark, intense fluor k, intense fluor k, intense fluor k, intense fluor k, intense fluorescent (1500 lux), escent (1500 lux), escent (1500 lux), escent (1500 lux), escent (1500 lux), and UV light conditions in temperature-controlled (22 °C) chambers and monitored more than 7 mo for ascorbic and UV light conditions in temperature-controlled (22 °C) chambers and monitored more than 7 mo for ascorbic and UV light conditions in temperature-controlled (22 °C) chambers and monitored more than 7 mo for ascorbic and UV light conditions in temperature-controlled (22 °C) chambers and monitored more than 7 mo for ascorbic and UV light conditions in temperature-controlled (22 °C) chambers and monitored more than 7 mo for ascorbic acid content and color changes acid content and color changes acid content and color changes acid content and color changes acid content and color changes. P . P . P . P . Poly oly oly oly olyester bev ester bev ester bev ester bev ester bever er er er erage bottles w age bottles w age bottles w age bottles w age bottles wer er er er ere made of poly e made of poly e made of poly e made of poly e made of polyethylene ter ethylene ter ethylene ter ethylene ter ethylene terephthalate (P ephthalate (P ephthalate (P ephthalate (P ephthalate (PET ET ET ET ET), or P ), or P ), or P ), or P ), or PET ET ET ET ET blended with 0.25%, 1%, and 4% polyethylene naphthalate (PEN). The cut-off wavelength ranged from 322 nm for blended with 0.25%, 1%, and 4% polyethylene naphthalate (PEN). The cut-off wavelength ranged from 322 nm for blended with 0.25%, 1%, and 4% polyethylene naphthalate (PEN). The cut-off wavelength ranged from 322 nm for blended with 0.25%, 1%, and 4% polyethylene naphthalate (PEN). The cut-off wavelength ranged from 322 nm for blended with 0.25%, 1%, and 4% polyethylene naphthalate (PEN). The cut-off wavelength ranged from 322 nm for P P P P PET to 373 nm for the 4% P ET to 373 nm for the 4% P ET to 373 nm for the 4% P ET to 373 nm for the 4% P ET to 373 nm for the 4% PEN/P EN/P EN/P EN/P EN/PET blend. S ET blend. S ET blend. S ET blend. S ET blend. Spectr pectr pectr pectr pectral irr al irr al irr al irr al irradiance adiance adiance adiance adiance, visible light intensity , visible light intensity , visible light intensity , visible light intensity , visible light intensity, and light distr , and light distr , and light distr , and light distr , and light distribution w ibution w ibution w ibution w ibution wer er er er ere e e e e evaluated in the light chambers and compared with supermarket display lighting and outdoor daylight conditions. evaluated in the light c...
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