نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه مهندسی مکانیک بیوسیستم، دانشکده کشاورزی، دانشگاه شهرکرد، شهرکرد، ایران
2 گروه مهندسی مکانیک بیوسستم، دانشکده کشاورزی، دانشگاه شهرکرد
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This research was conducted to investigate the effects of dynamic impact, ultraviolet (UV) light irradiation, and storage time on the mechanical and acoustic quality indices of Golden Delicious apple fruit. The experiments were performed in a completely randomized factorial design with three replications. Apples were treated with impact energy levels of 0.015, 0.075, and 0.18 Joules, UV irradiation durations of 0, 20, 40, and 60 minutes, and storage periods of 3 and 10 days. the results showed that impact energy levels, UV-C irradiation duration, and storage period significantly affected the compression force (punch force), bruise volume, and acoustic wave speed. The greatest reduction in compression force (15.36 N) and sound velocity (138.90 m/s), and the largest bruise volume (693.59 mm³) were observed under the condition of maximum impact energy (0.18 J), indicating structural tissue damage and reduced mechanical resistance at this energy level. UV irradiation, especially at 60 minutes, modulated the negative effects of impact and storage, leading to an increase in compression force (up to 21.53 N), a decrease in bruise volume (416.58 mm³), and an increase in sound velocity (up to 158.97 m/s), which suggests the preservation of tissue structural integrity. Increasing storage time also accelerated the decreasing trend in mechanical properties (compression force and sound velocity) and the increase in bruise volume. The findings indicate that UV-C irradiation can be effective as a post-harvest method in preserving the mechanical quality and reducing impact damage in apples.
کلیدواژهها [English]
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