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Prediction of the Physicochemical and Nutraceutical Characteristics of ‘Hass’ Avocado Seeds by Correlating the Physicochemical Avocado Fruit Properties According to Their Ripening State

Abstract

Vegetal wastes are currently a source of pollution due to the excess of organic compounds in the environment. Seeds are the main by-product of the avocado industry and represent 16–22% of the total weight and it is considered a waste without applications. Despite the seed stands out for its high content of phenolic compounds, lack of knowledge regarding of the best processing state using non-invasive and short-time methods are required to take advantage of these nutraceutical compounds. This research aimed to find correlations from physicochemical analysis, color, hardness, and firmness of the whole avocado seeds with its nutraceutical properties as long as the ripeness increased, providing information for further industrial use of this waste. The results indicated that ‘Hass’ avocado fruit ripening positively correlates with the improvement of the physicochemical parameters involved in the fruit processing and the increase of nutraceutical compounds in the seed. The ripeness process decreased moisture (%) and hardness (N) parameters in the seeds (27.69 and 16.4%, respectively), facilitating its processing. Moreover, the ripening increased the antioxidant capacity by DPPH* around 7%, due to the concentration of phenolic compounds in the seed. Seed’s phenolic compounds were positively correlated with the Hue angle at increasing ripeness, becoming a potential physicochemical indicator for the industry. The prediction of changes in nutraceutical compounds and physicochemical properties, as ripening occurred, may reduce analysis times, processes, and guidance to use avocado seeds as a by-product. These results facilitate the seed processing and open up opportunities for its use in the industry.

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Data Availability

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

Author V. Sánchez-Quezada acknowledges to Ph.D. I. Luzardo-Ocampo for the support to manuscript with the language edition and Consejo Nacional de Ciencia y Tecnología (CONACyT-Mexico) for her Ph.D. scholarship (grant number: 694824).

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Correspondence to Guadalupe Loarca-Piña.

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Condensed tannins.

The results are expressed as the mean ± SD of three independent experiments by the Tukey test (p < 0.05). CE/100g: milliequivalent of (+)-catechin per 100g of sample (PDF 35.0 KB)

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Sánchez-Quezada, V., Campos-Vega, R. & Loarca-Piña, G. Prediction of the Physicochemical and Nutraceutical Characteristics of ‘Hass’ Avocado Seeds by Correlating the Physicochemical Avocado Fruit Properties According to Their Ripening State. Plant Foods Hum Nutr 76, 311–318 (2021). https://doi.org/10.1007/s11130-021-00900-z

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Keywords

  • Avocado seed
  • Food applications
  • Nutraceutical compounds
  • Physicochemical properties
  • By-products use