CN103497010A - Methods for reducing cadmium content in cadmium polluted mushroom-stick lentinula edodes fruiting bodies - Google Patents
Methods for reducing cadmium content in cadmium polluted mushroom-stick lentinula edodes fruiting bodies Download PDFInfo
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- CN103497010A CN103497010A CN201310437311.XA CN201310437311A CN103497010A CN 103497010 A CN103497010 A CN 103497010A CN 201310437311 A CN201310437311 A CN 201310437311A CN 103497010 A CN103497010 A CN 103497010A
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Abstract
The invention discloses five methods for reducing the cadmium content in cadmium polluted mushroom-stick lentinula edodes fruiting bodies. The five methods are respectively adding ZnSO4.7H2O in a lentinula edodes culture medium, adding chitosan in the lentinula edodes culture medium, adding 1mg/kg salicylic acid in the lentinula edodes culture medium, adding a mixture of 5g/kg zeolite and 10mg/kg chitosan in the lentinula edodes culture medium, and adding gypsum in the lentinula edodes culture medium. Due to the adoption of the technical scheme, the additive is added to the lentinula edodes culture medium so as to reduce the cadmium content in the cadmium polluted mushroom-stick lentinula edodes fruiting bodies.
Description
Technical field
The present invention relates to a kind of method that reduces cadmium content in cadmium pollution bacterium bar spices massee fruiting bodies.
Background technology
Mushroom is the fungi of a kind of medicine-food two-purpose of Agaricales Tricholomataceae, is second-biggest-in-the-world edible mushrooms, is also one of China's special product.Delicious flavour, nutritious, have " plant queen " good reputation.The needs that increase year by year and protect forest resources along with mushroom consumption; original artificial culture mushroom main raw material used has turned to agriculture production tankage and industrial waste from raw materials such as simple use wood chip, Duan Mu gradually; this has increased the heavy metal contamination risk to a certain extent, as the quality security problem of the mushroom product of natural health, is also more and more severeer.Cd
2+and compound is one of important noxious pollutant of controlling of Safety of Food Quality, because mushroom has higher accumulation ability to the Cd ion, can enter human body by food chain, thus harm eater's health.
Cadmium is a kind of contaminant trace species of extensive existence, in environment, can not be degraded, and by food chain, enters human body, human body is had to the toxicity of height.Mushroom has very strong inrichment to cadmium, especially, in the situation that cultivation matrix or growing environment cadmium content are higher, can cause the Cadmium in Dried Mushroom severe overweight.Such as external source is supplemented the 3mg/Kg cadmium, can make cadmium content in sporophore increase approximately 20 times, greatly affect bacterium mushroom quality.
Summary of the invention
The purpose of this invention is to provide a kind of method that reduces cadmium content in cadmium pollution bacterium bar spices massee fruiting bodies, solve in prior art in the situation that cultivation matrix or growing environment cadmium content are higher the technical problem that the mushroom cadmium content is higher.
The first technical scheme of the present invention: reduce the method for cadmium content in cadmium pollution bacterium bar spices massee fruiting bodies, it is characterized in that, increase ZnSO in mushroom culture medium
4.7H
2o.
The second technical scheme of the present invention: reduce the method for cadmium content in cadmium pollution bacterium bar spices massee fruiting bodies, it is characterized in that: increase chitosan in mushroom culture medium.
The third technical scheme of the present invention: reduce the method for cadmium content in cadmium pollution bacterium bar spices massee fruiting bodies, it is characterized in that: increase the 1mg/kg Whitfield's ointment in mushroom culture medium.
The 4th kind of technical scheme of the present invention: reduce the method for cadmium content in cadmium pollution bacterium bar spices massee fruiting bodies, it is characterized in that: increase 5g/kg zeolite, 10mg/kg chitosan in mushroom culture medium.
The 5th kind of technical scheme of the present invention: reduce the method for cadmium content in cadmium pollution bacterium bar spices massee fruiting bodies, it is characterized in that: increase gypsum in mushroom culture medium.
The present invention, owing to having adopted above-mentioned technical scheme, increases additive in mushroom culture medium, reduces cadmium content in cadmium pollution bacterium bar spices massee fruiting bodies.
Embodiment
Below by specific embodiment, technical scheme of the present invention is described in further detail.
The present invention reduces the method for cadmium content in cadmium pollution bacterium bar spices massee fruiting bodies, adopts the mushroom solid medium to be comprised of weight percent 78% wood chip, 20% wheat bran, 1% brown sugar, 1% gypsum.Mushroom has very strong inrichment to cadmium, and external source is supplemented Cd 3.0mg/kg, can make cadmium content in sporophore increase approximately 20 times, affects greatly the mushroom quality.
In order to reduce cadmium content in cadmium pollution bacterium bar spices massee fruiting bodies, the inventive method increases additive in mushroom culture medium, thus reduce sporophore every content.
Embodiment 1
Sampling Xianggu mushroom strain 808 kinds, its mushroom culture medium is comprised of weight percent wood chip 78%, wheat bran 20%, brown sugar 1%, gypsum 1%, after external source increases heavy metal Cd 3.0mg/kg, due to inrichment, sporophore every content reach 53.52mg/kg.Increase the listed additive of table one in mushroom culture medium, sporophore every corresponding decline of content.
Sporophore every the testing method of content: according to test-results was known in the past, cadmium content in the first damp mushroom fruiting body can be far away higher than the two or three tide, thereby sample when the first damp mushroom fruiting, 60 ℃ of oven dry, pulverizer is pulverized rear 100 orders and is sieved, standby, each is processed duplicate detection and removes mean value 3 times.
Table 1
Add as seen from Table 1 mixture, chitosan, Whitfield's ointment, gypsum, the ZnSO of zeolite and chitosan in the bacterium mushroom culture medium
4.7H
2after O, cadmium content descends, and particularly adds ZnSO
4.7H
2after O in sporophore cadmium content significantly descend, greatly reduce cadmium and coerce the enrichment of lower sporophore to cadmium.Especially add the ZnSO of higher dosage
4.7H
2o reduces by 6 times as 400mg/kg can make cadmium coerce cadmium content in lower sporophore.Increase above-mentioned additive in the bacterium mushroom culture medium, reduce in the time of content, still have than high protein content in sporophore, thus the commercial quality of raising sporophore.
Embodiment 2
Sampling Xianggu mushroom strain 868 kinds, its mushroom culture medium is comprised of weight percent wood chip 78%, wheat bran 20%, brown sugar 1%, gypsum 1%, after external source increases heavy metal Cd 3.0mg/kg, due to inrichment, sporophore every content reach 68.3mg/kg.Increase the listed additive of table two in mushroom culture medium, sporophore every corresponding decline of content.
Sporophore every the testing method of content: according to test-results was known in the past, cadmium content in the first damp mushroom fruiting body can be far away higher than the two or three tide, thereby sample when the first damp mushroom fruiting, 60 ℃ of oven dry, pulverizer is pulverized rear 100 orders and is sieved, standby, each is processed duplicate detection and removes mean value 3 times.
Table 2
Add as seen from Table 2 gypsum, ZnSO in the bacterium mushroom culture medium
4.7H
2after O, cadmium content descends, and particularly adds ZnSO
4.7H
2after O in sporophore cadmium content significantly descend, greatly reduce cadmium and coerce the enrichment of lower sporophore to cadmium.Especially add the ZnSO of higher dosage
4.7H
2o reduces at least 4 times as 400mg/kg can make cadmium coerce cadmium content in lower sporophore.Increase above-mentioned additive in the bacterium mushroom culture medium, reduce in the time of content, still have than high protein content in sporophore, thus the commercial quality of raising sporophore.
Claims (10)
1. reduce the method for cadmium content in cadmium pollution bacterium bar spices massee fruiting bodies, it is characterized in that, increase ZnSO in mushroom culture medium
4.7H
2o.
2. the method for cadmium content in reduction cadmium pollution bacterium bar spices massee fruiting bodies according to claim 1, is characterized in that described ZnSO
4.7H
2the content of O is 50-400mg/Kg.
3. the method for cadmium content in reduction cadmium pollution bacterium bar spices massee fruiting bodies according to claim 2, is characterized in that described ZnSO
4.7H
2the content of O is 400mg/Kg.
4. reduce the method for cadmium content in cadmium pollution bacterium bar spices massee fruiting bodies, it is characterized in that: increase chitosan in mushroom culture medium.
5. the method for cadmium content in reduction cadmium pollution bacterium bar spices massee fruiting bodies according to claim 4, it is characterized in that: the content of described chitosan is 100mg/kg-400mg/kg.
6. reduce the method for cadmium content in cadmium pollution bacterium bar spices massee fruiting bodies, it is characterized in that: increase the 1mg/kg Whitfield's ointment in mushroom culture medium.
7. reduce the method for cadmium content in cadmium pollution bacterium bar spices massee fruiting bodies, it is characterized in that: increase 5g/kg zeolite, 10mg/kg chitosan in mushroom culture medium.
8. reduce the method for cadmium content in cadmium pollution bacterium bar spices massee fruiting bodies, it is characterized in that: increase gypsum in mushroom culture medium.
9. the method for cadmium content in reduction cadmium pollution bacterium bar spices massee fruiting bodies according to claim 8, it is characterized in that: the content of described gypsum is 10g/kg-30g/kg.
10. according to the method for cadmium content in the described reduction cadmium pollution of one of claim 1-9 bacterium bar spices massee fruiting bodies, it is characterized in that the composition of described mushroom culture medium is: weight percent 78% wood chip, 20% wheat bran, 1% brown sugar, 1% gypsum.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110959463A (en) * | 2019-11-12 | 2020-04-07 | 上海市农业科学院 | Method for reducing cadmium content in mushroom hyphae |
| CN113273435A (en) * | 2021-06-08 | 2021-08-20 | 武汉商学院 | Process method for reducing adsorption of heavy metal cadmium by mushrooms |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110959463A (en) * | 2019-11-12 | 2020-04-07 | 上海市农业科学院 | Method for reducing cadmium content in mushroom hyphae |
| CN113273435A (en) * | 2021-06-08 | 2021-08-20 | 武汉商学院 | Process method for reducing adsorption of heavy metal cadmium by mushrooms |
| CN113273435B (en) * | 2021-06-08 | 2022-09-13 | 武汉商学院 | Process method for reducing adsorption of heavy metal cadmium by mushrooms |
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Inventor after: Zhao Li Inventor after: Yang Hui Inventor after: Ke Leqin Inventor after: Liang Qiaoling Inventor after: Zhang Long Inventor after: Luo Zhengrong Inventor before: Zhao Chi Inventor before: Yang Hui Inventor before: Ke Leqin Inventor before: Liang Qiaoling Inventor before: Zhang Long Inventor before: Luo Zhengrong |
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