The effect of different packaging on physical and chemical properties of oranges during storage

Abstract

The effects of packaging on the maintenance of the quality of oranges (cultivar Belladonna) were studied. The oranges were stored at 6°C and 80% relative humidity for 45 days, wrapped in biaxially oriented polypropylene (BOPP), nanoactive films, or nonwrapped in crates. The physical‐chemical characteristic and the bioactive compounds were evaluated in the juice at intervals of 15 days. Oranges preserved in the nanoactive film have a greater shelf‐life both for the organoleptic characteristics of the fruit after 45 days of conservation, and for the content of biologically active compounds: The concentration of total flavonoids, total polyphenols, and ascorbic acid is greater than that obtained from oranges preserved in BOPP films and crates. This behavior is certainly due to the characteristics of the nanoactive film that, unlike other films on the market, has the ability to retain a greater amount of ethylene produced during respiration of the fruit. Furthermore, oranges stored in plastic crates showed mold development after 15 days, after 30 days for fruit wrapped in BOPP film, but only after 45 days in nanoactive film. Practical applications Citrus fruits are an important source of bioactive compounds such as ascorbic acid, carotenoids, flavonoids, flavanone glycosides, and phenolic compounds: All potentially health‐promoting. The use of plastic films for wrapping citrus fruits can be beneficial in maintaining freshness during postharvest storage.

Bergamot (Citrus bergamia, Risso): The Effects of Cultivar and Harvest Date on Functional Properties of Juice and Cloudy Juice

“…The analyses were conducted spectrophotometrically as suggested by Panuccio et al and Sicari et al [19,20].…”

Cavitation‐Induced Stress Whitening in Semi‐Crystalline Polymers

“…The testing environment acts as another parameter determining the mechanical behaviors of polymers as well. Polyolefin born as semi‐crystallizing polymers, such as isotactic polypropylene (iPP), polyethylene (PE), and polybutene‐1 (PB‐1) are phenomenally utilized as commercial products, for example, pipe, packaging, and electric appliance in our daily life. To understand the crystallization behaviors and mechanical properties of polymers under different processing conditions are drastically attracting attentions from both industry and academia.…”

Bergamot (<em>Citrus bergamia</em>, Risso): The Effects of Cultivar and Harvest Date on Functional Properties of Juice and Cloudy

“…For this reason many authors suggest applying more than one assay to evaluate antioxidant activity. In the present study we applied DPPH assay and FRAP assay which are two of the most common tests used on many matrices such as common orange [13] blood orange juice [10], edible vegetable oils and potential industrial vegetable oils [36][37][38], apples, bananas, strawberries, kiwifruit, cauliflower [39]. Vitamin C and flavonoids are the most important antioxidants in bergamot juice and show an inverse ratio during fruit ripening: the vitamin C showed a decreasing trend (Table 3) in opposition to total flavonoid content which increased with harvest date (Table 4).…”