Effect of damage by Oryzaephilus surinamensis on the chemical components of honeysuckle
The stable ecological environment of the warehouse for storage of grain, Chinese herbal medicine and tobacco provided good condition for growth of pests, thus caused mass propagation of pests. Rapid propagation of pests on stored grain has brought substantial economic loss to farmers. Many previous...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Zhejiang University Press
2017-03-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
| Subjects: | |
| Online Access: | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2016.04.112 |
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| Summary: | The stable ecological environment of the warehouse for storage of grain, Chinese herbal medicine and tobacco provided good condition for growth of pests, thus caused mass propagation of pests. Rapid propagation of pests on stored grain has brought substantial economic loss to farmers. Many previous studies have showed that pest damage affected not only the quantity, but also the quality of stored grain. Therefore, study on the effect of pest damage on chemical composition of the hoard could provide a scientific basis for safe storage. Honeysuckle was one of the rare Chinese herbal medicine with disease prevention and healthcare functions, such as heat-clearance and detoxification, anti-inflammation and dispelling swollen. It had a long cultivation history in Anhui Province, and has been rated as one of demonstration varieties of authentic Chinese herbal medicine in GAP (good agricultural practice for Chinese crude drugs) bases. However, honeysuckle was damaged by many pests after harvest, because of the backward storage conditions and management measures during the storage period. Oryzaephilus surinamensis which belongs to Silvanidae within Coleoptera, was one of the pests on honeysuckle, caused great economic loss to farmers and enterprises.In this study, the chemical component variations of honeysuckle after damaged by O. surinamensis was tested in the laboratory, to investigate the effect of O. surinamensis damage on the chemical components of honeysuckle during the storage period. In the experiment, we set five population densities of pests (200, 400, 600, 800 and 1 000 individual/kg), and the protein, total sugar, total flavonoid, chlorogenic acid and vitamin C contents of honeysuckle were tested after fed by O. surinamensis for 7, 14, 21, 28 and 35 d using Kjeldahl determination method, anthrone colorimetry and ultraviolet spectroscopy method separately. The chemical component contents of honeysuckle not fed by O. surinamensis were also tested as controls, and three repetitions were proceeded.The result showed that the population density and damage time of O. surinamensis had significant effect on the chemical components of honeysuckle, and the protein, total sugar, total flavonoid, chlorogenic acid and vitamin C contents all declined after O. surinamensis damage. Under the population densities of 200, 400, 600, 800 and 1 000 individual/kg, the protein contents of honeysuckle declined by 1.43%, 3.21%, 5.14%, 7.81% and 9.54% respectively, compared with the control after damage time of 7 d. The total sugar contents declined by 0.24%, 1.37%, 2.15%, 3.28% and 4.17% respectively; the total flavonoid contents declined by 1.25%, 1.84%, 2.43%, 3.51% and 4.32% respectively; the chlorogenic acid contents declined by 0.29%, 0.60%, 0.93%, 1.28% and 1.56% respectively; and the vitamin C contents declined by 0.02%, 0.06%, 0.09%, 0.13% and 0.15% respectively. With the extension of damage time, the content of each component continuously declined. Under the same damage time, the content of each component declined with the increase of population density. The correlation analysis indicated that the protein, total sugar, total flavonoids, chlorogenic acid and vitamin C contents were all negatively correlated to the population density and damage time of O. surinamensis (P<0.05). Two-way analysis of variance showed that, no significant effect was observed between the interaction of population density and damage time on each component of honeysuckle (P>0.05) .In conclusion, O. surinamensis damage on honeysuckle could cause decline of the chemical component contents, and quality decrease of honeysuckle. |
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| ISSN: | 1008-9209 2097-5155 |