Advances in sustainable approaches utilizing orange peel waste to produce highly value-added bioproducts

Ali Mohsin, Muhammad Hammad Hussain, Waqas Qamar Zaman, Muhammad Zubair Mohsin, Junhong Zhang, Zebo Liu, Xiwei Tian, Xiwei Salim-ur-Rehman, Imran Mehmood Khan, Sobia Niazi, Yingping Zhuang, Meijin Guo

Research output: Journal PublicationReview articlepeer-review

23 Citations (Scopus)


Orange peel waste (OPW), a discarded part of orange fruit, is a rich source of essential constituents that can be transformed into highly value-added bioproducts. OPW is being generated in million tonnes globally and returns to the environment without complete benefit. Thus, a high volume of annually produced OPW in the industry requires effective valorization. In this regard, limited data is available that summarizes the broader spectrum for the sustainable fate of OPW to produce value-added bioproducts. The main objective of this treatise is to explore the sustainable production of bioproducts from OPW. Therefore, this review covers all the aspects of OPW, from its production to complete valorization. The review encompasses the extraction technologies employed for extracting different valuable bioactive compounds, such as: essential oil (EO), pectin, and carotenoids, from OPW. Furthermore, the suitability of bioconversion technologies (digestion/fermentation) in transforming OPW to other useful bioproducts, such as: biochemicals (lactic acid and succinic acid), biopolysaccharides (xanthan and curdlan gum), and bioenergy (biomethane and bioethanol) is discussed. Also, it includes the concept of OPW-based biorefineries and their development that shall play a definite role in future to cover demands for: food, chemicals, materials, fuels, power, and heat. Lastly, this review focuses on OPW-supplemented functional food products such as: beverages, yogurts, and extruded products. In conclusion, insights provided in this review maximize the potential of OPW for commercial purposes, leading to a safe, and waste-free environment.

Original languageEnglish
Pages (from-to)1284-1303
Number of pages20
JournalCritical Reviews in Biotechnology
Issue number8
Publication statusPublished - 2022
Externally publishedYes


  • Orange peel waste
  • bioproducts
  • biorefineries
  • extraction technologies
  • fermentation approaches
  • valorization

ASJC Scopus subject areas

  • Biotechnology
  • Applied Microbiology and Biotechnology


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