Olive stone as a sustainable agricultural by-product: Valorization pathways and prospects in food and feed Industries

Background: Olive stone (OS) has emerged as a promising by-product with potential applications in food and feed formulations, owing to its unique properties.  Despite growing interest in recent years, research dedicated to the comprehensive evaluation of OS remains limited.

Aim: This review aimed to elucidate the structure, physical and chemical properties of OS, provide an overview of its diverse application areas, and highlight its potential utilization in food and feed formulations through case studies and recent advancements.

Methods: A systematic literature search was conducted using prominent databases, including Google Scholar, Web of Science, PubMed and Scopus, with a focus on studies published in recent years. The search strategy employed keywords such as olive, olive by-products, olive stone composition, valorization areas, use of agricultural wastes in food. Relevant publications in English or Turkish were considered, resulting in a reference list of 97 articles that were critically reviewed and cited.

Results: OSs are a significant by-product generated during the olive oil extraction and pitted table olive production, constituting approximately 18-22% of the olive fruit. OS possesses a lignocellulosic composed primarily of hemicellulose, cellulose and lignin. Although its current predominant use is as fuel due to its high calorific value, OS exhibits potential for diverse applications owing to its rich composition of fat, protein, bioactive phenolic compounds and dietary fiber. Potential valorization pathways include activated carbon production, oil extraction, furfural synthesis, plastic filling material, cosmetic formulations, biosorbents, resin production, and animal nutritional supplementation. Recent studies have increasingly explored the use of OSs as a functional food ingredient, with promising results demonstrating its efficacy as an antioxidant, nutraceutical and thickening agent in food formulations.

Conclusion: This review underscores the multifaceted potential of OS, particularly in food and feed applications. The valorization of OS aligns with sustainable waste management practices and offers innovative opportunities for enhancing food and feed formulations.

Keywords

Olive olive stone waste management waste valorization agricultural by-product
  • Ayla Mumcu
    Olive Research Institute, Universite Cd. No:43 35100, Izmir
  • Aişe Deliboran
    Olive Research Institute, Universite Cd. No:43 35100, Izmir

How to Cite

Olive stone as a sustainable agricultural by-product: Valorization pathways and prospects in food and feed Industries. (2025). The North African Journal of Food and Nutrition Research, 9(SI), S1-S17. https://doi.org/10.51745/najfnr.9.SI.S1-S17

Ahmad, N., Anwar, F., Zuo, Y., Aslam, F., Shahid, M., Abbas, A., Farhat, L. B., H. Al-Mijalli, S., & Iqbal, M. (2022). Wild olive fruits: Phenolics profiling, antioxidants, antimicrobial, thrombolytic and haemolytic activities. Arabian Journal of Chemistry, 15(12), 104241. https://doi.org/10.1016/j.arabjc.2022.104241

Alché, J. D., Jiménez-López, J. C., Wang, W., Castro-López, A. J., & Rodríguez-García, M. I. (2006). Biochemical characterization and cellular localization of 11S type storage proteins in olive (Olea europaea L.) seeds. Journal of Agricultural and Food Chemistry, 54(15), 5562–5570. https://doi.org/10.1021/jf060203s

Asimakidou, T., & Chrissafis, K. (2022). Thermal behavior and pyrolysis kinetics of olive stone residue. Journal of Thermal Analysis and Calorimetry, 147(16), 9045–9054. https://doi.org/10.1007/s10973-021-11163-w

Aziz, A., Elandaloussi, E. H., Belhalfaoui, B., Ouali, M. S., & De Ménorval, L. C. (2009). Efficiency of succinylated-olive stone biosorbent on the removal of cadmium ions from aqueous solutions. Colloids and Surfaces. B, Biointerfaces, 73(2), 192–198. https://doi.org/10.1016/j.colsurfb.2009.05.017

Badiu, D., Luque, R. & Rajendram, R. (2010). Chapter 123 – effect of olive oil on the skin V.R. Preedy, R.R. Watson (Eds.), Olives and Olive Oil in Health and Disease Prevention, Academic Press, San Diego (2010), pp. 1125-1132.

Bartolomei, M., Capriotti, A. L., Li, Y., Bollati, C., Li, J., Cerrato, A., Cecchi, L., Pugliese, R., Bellumori, M., Mulinacci, N., Laganà, A., Arnoldi, A., & Lammi, C. (2022). Exploitation of Olive (Olea europaea L.) seed proteins as upgraded source of bioactive peptides with multifunctional properties: Focus on antioxidant and dipeptidyl-dipeptidase-IV inhibitory activities, and glucagon-like peptide 1 improved modulation. Antioxidants (Basel, Switzerland), 11(9), 1730. https://doi.org/10.3390/antiox11091730

Batçıoğlu, K., Küçükbay, F., Alagöz, M. A., Günal, S., & Yilmaztekin, Y. (2023). Antioxidant and antithrombotic properties of fruit, leaf, and seed extracts of the Halhalı olive (Olea europaea L.) native to the Hatay region in Turkey. Health, 1, 3. https://doi.org/10.21603/2308-4057-2023-1-557

Ben Mansour, A., Porter, E. A., Kite, G. C., Simmonds, M. S. J., Abdelhedi, R., & Bouaziz, M. (2015). Phenolic profile characterization of Chemlali olive stones by liquid chromatography-ion trap mass spectrometry. Journal of Agricultural and Food Chemistry, 63(7), 1990–1995. https://doi.org/10.1021/acs.jafc.5b00353

Ben Saad, A., Tiss, M., Keskes, H., Chaari, A., Sakavitsi, M. E., Hamden, K., ... & Allouche, N. (2021). Antihyperlipidemic, Antihyperglycemic, and Liver Function Protection of Olea europaea var. Meski Stone and Seed Extracts: LC‐ESI‐HRMS‐Based Composition Analysis. Journal of Diabetes Research, 2021(1), 6659415. https://doi.org/10.1155/2021/6659415

Blázquez, G., Hernáinz, F., Calero, M., Martín-Lara, M. A., & Tenorio, G. (2009). The effect of pH on the biosorption of Cr (III) and Cr (VI) with olive stone. Chemical Engineering Journal (Lausanne, Switzerland: 1996), 148(2–3), 473–479. https://doi.org/10.1016/j.cej.2008.09.026

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