Mechanical Behavior of Hulled Peanut and Its Kernel During the Shelling Process

Issue Date

3-2009

Abstract

The rupture resistance of both hulled peanut and its kernel were examined in terms of average rupture force, deformation, firmness and toughness. Samples at various moisture contents and sizes were compressed at three loading positions (longitudinal, parallel to split plane and perpendicular to split plane). The compressive force needed to rupture for the hulled peanut and the kernel decreased with an increase in moisture content as the deformation at rupture point increased. Moreover, firmness increased and toughness decreased when moisture content increased. Larger size hulled peanut and kernel had higher rupture force and firmness values. For toughness, the trend was opposite. The highest values of firmness and toughness were measured at perpendicular loading position to the split plane. The over all average values of rupture force, deformation, firmness and toughness for hulled peanut and kernel when the samples were compressed, in relation to the over all range of moisture content, size and loading position, were determined as 87.58 and 47.45 N, 2.16 and 1.46 mm, 46.80 and 49.40 N mm -1, 0.018 and 0.024 mJ mm -3, respectively.

Source or Periodical Title

Philippine Agricultural Scientist, The (Formerly: The Philippine Agriculturist)

ISSN

0031-7454

Volume

92

Issue

1

Page

92-99

Document Type

Article

Frequency

quarterly

Physical Description

illustrations ; graphs ; tables ; references

Language

English

Subject

deformation, firmness, peanut, rupture resistance, toughness

En – AGROVOC descriptors

ARACHIS HYPOGAEA; KERNELS; NUT CROPS; SHELLING; HUSKING; MOISTURE CONTENT; FIRMNESS; TENSILE STRENGTH; MECHANICAL PROPERTIES

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