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A Visual Method of Determining Maturity of Shelled Peanuts¹

Authors: K. S. Rucker , C. K. Kvien , G. Vellidis , N. S. Hill , J. K. Sharpe

  • A Visual Method of Determining Maturity of Shelled Peanuts¹

    ARTICLES

    A Visual Method of Determining Maturity of Shelled Peanuts¹

    Authors: , , , ,

Abstract

To assess maturity distributions of shelled-stock peanut lots, a method was developed to characterize peanut kernels into one of three possible maturity classes based on testa texture and color and kernel shape. Kernels having testa with longitudinal wrinkles, a raisin-like texture, light color and slightly elongated shape were classed Immature and predominately were shelled from pods in the Hull-Scrape categories White, Yellow I, and early-Yellow II. Kernels with a smooth testa, pink to dark pink and with a more rounded appearance were classed Mid-mature and predominately were shelled from pods in the late-Yellow II, Orange, and early-Brown Hull-Scrape classes. Kernels with a waffle-like surface texture, dark pink to brown testa, and a more rounded appearance were classed as Mature, and predominately were shelled from pods in the mid-and late-Brown and the Black Hull-Scrape categories. Attempts to automate the system using color alone were unsuccessful; to be a reliable maturity sorting technique, both testa texture and color pattern had to be considered.

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Keywords: testa, surface texture, kernel, shape

How to Cite:

Rucker, K. & Kvien, C. & Vellidis, G. & Hill, N. & Sharpe, J., (1994) “A Visual Method of Determining Maturity of Shelled Peanuts¹”, Peanut Science 21(2), p.143-146. doi: https://doi.org/10.3146/i0095-3679-21-2-16

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Published on
01 Jul 1994
Peer Reviewed

Author Notes

1Equipment brands and manufacturers are given as information for the reader and are not an endorsement to the exclusion of other products which may perform the same function.