Studies on insect infestation in chocolates

The ability of stored-product pests including the cigarette beetle, Lasioderma serricorne, the sawtoothed grain beetle, Oryzaephilus surinamensis, the rust-red flour beetle, Tribolium castaneum, and the almond moth, Ephestia cautella, to infest chocolates under packaged and unpackaged conditions was...

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Bibliographic Details
Published in:Journal of stored products research 2007, Vol.43 (2), p.118-122
Main Authors: Begum, Khamrunissa, Vanitha Reddy, P., Leelaja, B.C., Rajashekar, Y., Rajendran, S.
Format: Article
Language:English
Subjects:
Biological and medical sciences
Cadra cautella
chocolate
Chocolates
dried fruit
Ephestia cautella
food packaging
Fundamental and applied biological sciences. Psychology
infestability
Insect infestation
Invertebrates
Lasioderma serricorne
Medically important nuisances and vectors, pests of stored products and materials: population survey and control
milk chocolate
nuts
Oryzaephilus surinamensis
packaged chocolates
Pests of stored products
population density
Prunus dulcis
storage insects
Tribolium castaneum
unpackaged chocolates
wafer chocolates
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Summary:The ability of stored-product pests including the cigarette beetle, Lasioderma serricorne, the sawtoothed grain beetle, Oryzaephilus surinamensis, the rust-red flour beetle, Tribolium castaneum, and the almond moth, Ephestia cautella, to infest chocolates under packaged and unpackaged conditions was investigated in the laboratory at 25±1 °C and 65±5% r.h. Four types of chocolates were investigated: milk, nut, dried fruit and nut, and wafer chocolates. Adults (beetles only, 20 per replicate) or eggs (30 per replicate) were released on unpackaged and packaged chocolates and infestation levels (number of living adults and larvae) were determined 45 days later. When adult beetles were released on unpackaged chocolates, the degree of infestation varied depending on the species and the type of chocolate. The highest infestation observed in unpackaged chocolate was that of O. surinamensis in wafer chocolate (mean 138.4). When eggs were released on unpackaged chocolates, the most numerous species was E. cautella in dried fruit and nut chocolate (mean population=180.8). With packaged chocolates exposed to adults or eggs, insect infestation was nil or negligible (mean population
ISSN:0022-474X
1879-1212
DOI:10.1016/j.jspr.2006.02.001