The potential of non-traditional walnut shells waste for the production of antioxidant reach extracts intended for the food industry


  • Madina Sultanova Astana branch of Kazakh Research Institute of Processing and Food Industry LLP, Al-Farabi Avenue 47, 010000, Nur-Sultan, Republic of Kazakhstan, Tel.: +77474853488
  • Askhat Dalabayev Astana branch of Kazakh Research Institute of Processing and Food Industry LLP, Al-Farabi Avenue 47, 010000, Nur-Sultan, Republic of Kazakhstan, Tel.: +77755155238
  • Aigerim Saduakas Astana branch of Kazakh Research Institute of Processing and Food Industry LLP, Al-Farabi Avenue 47, 010000, Nur-Sultan, Republic of Kazakhstan
  • Aida Nurysh Astana branch of Kazakh Research Institute of Processing and Food Industry LLP, Al-Farabi Avenue 47, 010000, Nur-Sultan, Republic of Kazakhstan
  • Nurtore Akzhanov Astana branch of Kazakh Research Institute of Processing and Food Industry LLP, Al-Farabi Avenue 47, 010000, Nur-Sultan, Republic of Kazakhstan
  • Madina Yakiyayeva Almaty Technological University, Research Institute of Food Technologies, Tole bi 100, 050012, Almaty, Republic of Kazakhstan, Tel.: +77011626749



walnut shell, vitamin, mineral, antioxidant, phenolic compound


Phenolic compounds extracted from walnut shells are potentially good natural sources of antioxidants for the food industry and have numerous health benefits. Walnuts have more antioxidant capacity than any other nut because the shell is primarily composed of lignin, a strong source of phenols. Studies demonstrated that lignin characterizes the shell strength level and is a source of antioxidants due to its chemical composition. In the current study, an extract obtained by extraction with a hydroalcoholic solvent of various concentrations from a walnut shell was investigated. The results of this study have proven that walnut shell extract contains the main sources of mineral elements and vitamins, which are of great importance. According to the biological value, this extract contains essential amino acids for the body. The high content of quercetin and catechin shows the antioxidant activity of the extract. In the present article, the authors disclose methods for obtaining an experimental batch of a prophylactic product based on walnut shells and give the product a technological characteristic. Consequently, a product was developed for prophylactic usage of 10 ml per 100 ml of water and must be taken 1-2 times a day for 21 days. The required product amount was calculated from the daily intake of vitamins, minerals, and flavonoids.


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How to Cite

Sultanova, M., Dalabayev, A., Saduakas, A., Nurysh, A., Akzhanov, N., & Yakiyayeva, M. (2023). The potential of non-traditional walnut shells waste for the production of antioxidant reach extracts intended for the food industry. Potravinarstvo Slovak Journal of Food Sciences, 17, 391–404.

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