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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/9666

Title: Effects of some groundnut packaging methods and protection with Ocimum and Syzygium powders on kernel infection by fungi
Authors: Ellis, William Otoo
Awuah, R.T.
Keywords: Syzygium powder
Ocimum powder
Issue Date: 2002
Publisher: Mycopathologia
Citation: Mycopathologia 154: 29–36, 2001. © 2002 Kluwer Academic Publishers. Printed in the Netherlands
Abstract: Powders from the leaves of Ocimum gratissimum and cloves of Syzygium aromaticum were used as protectants at 3% (w/w) in combination with various packaging methods to store 3.5 kg groundnut kernel samples (9.3% moisture) artificially inoculated with Aspergillus parasiticus. Phostoxin-protected and unprotected samples were the controls. Packaging was accomplished with (i) Jute bags; JB (ii) Interlaced polypropylene bags; IPPB (iii) Polyethylene bags; PB (iv) PB inserted into IPPB and (v) PB inserted into JB. Selected treatments were repeated concurrently with naturally infected kernels (6.6% moisture). With 9.3% moisture kernels, there was a highly significant protectant, packaging method, and protectant X packaging method effect on protection of kernels from fungal infection at 2, 4, and 6 months. Packaging with JB and IPPB with or without plant powders gave 100% protection against fungi but insect infestation was prevented only when the Syzygium powder was used. When PB was used either singly or in combination with JB and IPPB, 100% protection from fungi was achieved up to 2 months with the Ocimum and up to 4 months with the Syzygium powder. The phostoxin treatment also gave 100% protection with JB and IPPB packaging but was ineffective with PB packaging. Kernels packaged with PB without the powders were extensively mouldy. Kernels with natural mycoflora (6.6% moisture) were free from fungi at 6 months regardless of the protectant and packaging used. In further tests, the Syzygium powder, at 3% and in combination with JB-packaging, effectively suppressed cross infection of healthy kernels (12% moisture) by fungi from diseased kernels when both kernel types occurred in the same lot. At 18.5% kernel moisture and with identical packaging, the Syzygium powder at 3%, was not as effective.
Description: This Article was published by Mycopathologia 154: 29–36, 2001. © 2002 Kluwer Academic Publishers. Printed in the Netherlands
URI: http://hdl.handle.net/123456789/9666
Appears in Collections:College of Science

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