A High-Yield Process for Production of Biosugars and Hesperidin from Mandarin Peel Wastes

Abstract

In this research, novel biorefinery processes for obtaining value-added chemicals such as biosugar and hesperidin from mandarin peel waste (MPW) are described. Herein, three different treatment methods were comparatively evaluated to obtain high yields of biosugar and hesperidin from MPW. Each method was determined by changes in the order of three processing steps, i.e., oil removal, hesperidin extraction, and enzymatic hydrolysis. The order of the three steps was found to have a significant influence on the production yields. Biosugar and hesperidin production yields were highest with method II, where the processing steps were performed in the following order: oil removal, enzymatic hydrolysis, and hesperidin extraction. The maximum yields obtained with method II were 34.46 g of biosugar and 6.48 g of hesperidin per initial 100 g of dry MPW. Therefore, the methods shown herein are useful for the production of hesperidin and biosugar from MPW. Furthermore, the utilization of MPWs as sources of valuable materials may be of considerable economic benefits and has become increasingly attractive.

Improved Sugar Recovery from Orange Peel by Statistical Optimization of Thermo-Alkaline Pretreatment

“…Numerous studies have focused on the effect of pretreatment on improved sugar content (especially glucose) by enzymatic hydrolysis [55][56][57][58][59][60]. Orange peels are rich in carbohydrate, which can serve as substrates in the fermentation process.…”

Mass transfer kinetics and process optimization of osmotic dehydration of Kinnow mandarin ( Citrus reticulata ) peel

“…A plethora of research has been conducted to investigate the valorization approaches of Kinnow peel waste, such as extraction of functional compounds by green novel strategies (Putnik et al., 2017), production of biosugars (Cho et al., 2020), and development of peel paste food products, such as jam, cookies, and madeleines (Tsurunaga et al., 2021). Nonetheless, these methods for processing of Kinnow peel are relatively high cost and require the use of specific chemicals.…”

Assessing the Feasibility of Biorefineries for a Sustainable Citrus Waste Management in Korea

“…According to the National Agricultural Cooperative Federation of Korea, the amount of discarded citrus in production areas was 40,168 tons in 2021. Mandarin consumption for juice production results in peel waste that constitutes approximately 30% of the mass of mandarin fruit [22]. Unfortunately, most mandarin peel waste is currently dumped in landfills or marine environments, creating serious environmental problems and incurring substantial disposal costs [23].…”

“…In addition to solid waste, the wastewater generated during CW processing has a negative impact on the environment due to its high biological and chemical oxygen demand; citrus wastewater also contains phenolic compounds and various organic acids [29]. Solid CW generated during the production and processing of citrus fruits is generally disposed of on-site or landfilled, Mandarin consumption for juice production results in peel waste that constitutes approximately 30% of the mass of mandarin fruit [22]. Unfortunately, most mandarin peel waste is currently dumped in landfills or marine environments, creating serious environmental problems and incurring substantial disposal costs [23].…”