Rapid and Non-destructive Determination of Oil Content of Peanut (Arachis hypogaea L.) Using Hyperspectral Imaging Analysis

Abstract A fifteen month shelf life study was conducted to determine the effectiveness of tertiary butylhydroquinone (TBHQ) as an antioxidant in products made from roasted peanuts (Arachis hypogaea L.). Five levels of TBHQ were studied, 0.0%, 0.01%, 0.02%, 0.03%, and 0.04% based on the fat content of the peanuts. Total carbonyl assays performed monthly served as indices of rancidity. Results indicate that the shelf life of the product may be extended up to thirteen months using the 0.02% level of TBHQ now allowed by the Food and Drug Administration. In addition, the quantitative determination of total carbonyls proved to be an acceptable indicator of rancidity of roasted peanuts.

Download Full-text

Non-destructive and rapid determination of TVB-N content for freshness evaluation of grass carp (Ctenopharyngodon idella) by hyperspectral imaging

Innovative Food Science & Emerging Technologies ◽

10.1016/j.ifset.2013.10.013 ◽

2014 ◽

Vol 21 ◽

pp. 179-187 ◽

Cited By ~ 72

Author(s):

Jun-Hu Cheng ◽

Da-Wen Sun ◽

Xin-An Zeng ◽

Hong-Bin Pu

Keyword(s):

Hyperspectral Imaging ◽

Grass Carp ◽

Rapid Determination ◽

Ctenopharyngodon Idella ◽

N Content ◽

Grass Carp Ctenopharyngodon Idella ◽

Non Destructive

Download Full-text

A Non-Destructive Method for Determining Peanut Pod Maturity

Peanut Science ◽

10.3146/i0095-3679-8-2-15 ◽

1981 ◽

Vol 8 (2) ◽

pp. 134-141 ◽

Cited By ~ 252

Author(s):

E. Jay Williams ◽

J. Stanley Drexler

Keyword(s):

Arachis Hypogaea ◽

Developmental Stages ◽

Commercial Culture ◽

Sand Blasting ◽

Arachis Hypogaea L ◽

Morphological Differences ◽

Non Destructive

Abstract A method of classification based on color and morphological differences of the mesocarp is described for determining the developmental stages of fresh peanut [Arachis hypogaea (L) ‘Flo-runner’] pods. Developmental stages are designated as Classes 1-7, with each subsequently numbered class representing progressively greater degrees of maturity. For illustration each class is subdivided into one-quarter increments which are represented pictorially by beginning points. Because various combinations of classes and/or subclasses can be used, the system has inherent flexibility to accomodate the degree of refinement dictated by classification needs. Maturity determination by this method requires removal of a portion of the exocarp or epidermis to expose the pod mesocarp. The exocarp can be removed by sand blasting, gentle abrasion, or lightly scraping with a knife. Because removal of the exocarp is non-destructive to the remaining pod structure and enclosed seeds, the method has inherent advantages for use in commercial culture and in biological investigations requiring intact pods and/or seed.

Download Full-text

Impact of exogenous alpha tocopherol on peanut seedlings (Arachis hypogaea L.) treated by norflurazon

Acta Biologica Szegediensis ◽

10.14232/abs.2019.2.125-133 ◽

2020 ◽

Vol 63 (2) ◽

pp. 125-133

Author(s):

Imene Manaa ◽

Reda Djebbar ◽

Ouzna Abrous-Belbachir

Keyword(s):

Arachis Hypogaea ◽

Photosynthetic Activity ◽

Reduced Glutathione ◽

Soluble Sugar ◽

Ascorbic Acid Content ◽

Alpha Tocopherol ◽

Glutathione S Transferase ◽

Arachis Hypogaea L ◽

Mda Content

Norflurazon 100 µM alone or in combination with α-tocopherol (0.25 mM) was applied in pre-emergence of peanut seedlings (Arachis hypogaea L.). Norflurazon treatment allowed to partially or totally photobleach plants which were noticeably smaller than the control. Norflurazon impaired the photosynthetic activity by decreasing photosynthetic pigments (carotenoids and chlorophylls) and by reducing quantities of soluble sugar. The determination of malondialdehyde (MDA) showed that its content was higher in treated plants in relation with enhancement of reactive oxygen species by the herbicide and decreased the endogenous α-tocopherol. The addition of exogenous α-tocopherol reduced the damage done by the herbicide at the membrane level because of the MDA content was less important than in norflurazon treated seedlings. Furthermore, the norflurazon decreased the glutathione S-transferase (GST) activity in the leaves and the roots of peanut seedlings, while it increased the level of reduced glutathione. This activity decreased even more with the application of exogenous α-tocopherol in combination with the herbicide. The herbicide alone or in association with the antioxidant α-tocopherol increased ascorbic acid content. The supplementation of α-tocopherol did not decrease the phytotoxicity of norflurazon although we observed a decrease in MDA content.

Download Full-text