Phytochemical composition of everbearing strawberries and storage quality of strawberry fruit treated by precooling

Abstract

This study was conducted to investigate the nutrient composition of everbearing strawberry cultivar grown on highlands of Gangwon province after harvest. Various phytochemical compositions such as ascorbic acid, anthocyanin, malondialdehyde, and phenolic compounds were analyzed in strawberry fruits from five different cultivars (cv. Albion, Flamenco, Goha, San Andreas, and Seascape). Ascorbic acid content was similar among five cultivars at 20 mg 100 g-1 , whereas major pigment anthocyanin in Seascape was higher than in any other cultivars. Goha and San Andreas showed higher total phenolic compound contents. The effect of room or forcedair precooling on Flamenco and Goha was studied. Higher weight loss was observed in Flamenco treated with forcedair cooling, while in Goha both precooling treatments induced weight loss. Both precooling treatments were effective to maintain firmness in two strawberry cultivars. Forced air cooling maintained total phenolic contents until 12 days of storage, and the efficiency accelerated by low temperature storage.

Energy consumption in relation to the number of stacked packages in forced air pre‐cooling of apples

“…A great number of experimental studies of FAC had focused on the quality of the horticultural products (Hong, Yeoung, & Eum, 2018; Kongwong, Boonyakiat, & Poonlarp, 2019; Salamat et al, 2020; Singh, Abdullah, Pradhan, & Mishra, 2019; Yan, Song, Li, & Jiang, 2018) as well as the measurement of the pre‐cooling time (Elansari & Mostafa, 2020; Mukama, Ambaw, Berry, & Opara, 2017), the pressure loss (Ngcobo, Delele, Opara, Zietsman, & Meyer, 2011; Vigneault, Markarian, Da Silva, & Goyette, 2004), and the energy consumption (Defraeye et al, 2014, 2015; Mukama et al, 2017; Opara, 2011; Wang, Lai, Jia, Chen, & Hui, 2020). There seemed to exist the following issues in the above experimental studies: (a) the FAC experimental research depended on the available seasons when the horticultural product was harvested (Ferrua & Singh, 2008; Redding et al, 2016); (b) the accuracy of the replicated experiments was affected by the changing thermophysical properties of the horticultural products (Redding et al, 2016); (c) the profiles of the temperature and the velocity of the cold air in the packages were disturbed by the temperature and the velocity sensors in the packages (O'Sullivan et al, 2014; Redding et al, 2016); and (d) the challenge in accurately measuring the temperature and pressure in the openings of the packages hindered a thorough understanding of the characteristics of the cold air flow and heat transfer (Han, Qian, Zhao, Yang, & Fan, 2017).…”

General formula of cooling curve for horticultural products on forced air pre‐cooling

“…Compared with other methods of pre‐cooling, forced air pre‐cooling had the advantages of cooling faster, lower cost and adapting to a variety of horticultural products (Liu, Jia, Li, & Zhang, 2021; Wang & Zhang, 2020). From the researchers' analysis, the more quickly cooling the postharvest horticultural products, the appearance, flavor, and nutritional value were better and the more economic benefits would be obtained (Hong, Yeoung, & Eum, 2018; Kongwong, Boonyakiat, & Poonlarp, 2019; Salamat et al, 2020; Yan, Song, Li, & Jiang, 2018). Thus, studying the optimal air parameters including velocity and temperature of forced air pre‐cooling for horticultural products was an important research direction (Jia, Liu, Yuan, Li, & Zhang, 2021).…”

“…economic benefits would be obtained (Hong, Yeoung, & Eum, 2018;Kongwong, Boonyakiat, & Poonlarp, 2019;Salamat et al, 2020;Yan, Song, Li, & Jiang, 2018). Thus, studying the optimal air parameters including velocity and temperature of forced air pre-cooling for horticultural products was an important research direction (Jia, Liu, Yuan, Li, & Zhang, 2021).…”

Influence of MAP on the Postharvest Quality of Glehnia littoralis Fr. Schmidt ex Miq.

“…However, as they go through each stage, such as selection, transportation, and storage, after harvest, their loss rate increases due to various reasons including moisture loss, vibration, physical damage caused by crushing, and pathogenic diseases caused by certain infectious microorganisms [1,2]. Appropriate postharvest treatment can minimize the water loss and decrease the nutrients used as respiratory substrates by reduced respiration [3,4]. Moisture loss due to transpiration and evaporation is the most critical factor impairing the postharvest quality [5].…”

“…However, unsuitable atmosphere conditions such as high carbon dioxide and ethylene accumulation cause deterioration of the postharvest quality [11]. Baby leafy treated with MAP at 8 • C with 20,000 cm 3 OTR film maintained leafy vegetable quality with high antioxidant activity and low odor generation [12]. MAP treatment maintained carotene and sugars in netted muskmelon and was effective in both preventing non-enzymatic browning and maintaining membrane integrity [13].…”