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Application of carragheen and starch as insect feed coagulant

A technology of artificial feed and Noctuidae, which is applied in the field of coagulant for artificial insect feed, can solve the problems of changing the nutritional ratio of feed, and achieve the effect of reducing costs

Inactive Publication Date: 2004-07-21
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since starch is a nutrient substance, adding too much starch will change the nutritional ratio in the feed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: Effects of Different Coagulant Components on the Growth and Development of Insects

[0015] In addition to the coagulant, the formula of the feed is as follows:

[0016] Wheat bran 10g, soybean powder 8g, yeast powder 6g, sorbic acid 0.1g, ethyl p-hydroxybenzoate 0.1g, vitamin C 0.2g.

[0017] The ratio of coagulant components and water is shown in Table 1. The starch was potato starch.

[0018] Mix the weighed soybean powder, wheat bran, yeast powder, carrageenan and starch with water. Mix the ingredients evenly, sterilize at a high temperature of 0.15 MPa for 30 minutes, take it out, add sorbic acid, ethyl p-hydroxybenzoate and vitamin C, stir well and let it cool to room temperature.

[0019] Above-mentioned each group feed is cut into thin slice of uniform size respectively (make larva eat up about one day), put into diameter 3cm, in high-temperature sterilized circular plastic film box of 5cm, then film box is placed in a long 30cm , 28cm in width an...

Embodiment 2

[0061] Embodiment two: Carrageenan and starch are used as the influence of coagulant on beet armyworm virus output

[0062] Except for the coagulant, the rest of the ingredients and the preparation method of the feed were the same as in Example 1.

[0063] The ratio of coagulant and water is shown in Table 3.

[0064] Coagulant composition and water consumption in table 3 feed

[0065] Feed number Carrageenan (g) Starch (g) Water (ml) Agar (g)

[0066] 17 1.0 2 90 ——

[0067] 18 1.4 0 80 ——

[0068] 19 1.8 4 100 ——

[0069] 20 1.2 2 100 ——

[0070] Control feed -- -- 100 1.6

[0071] Cut each of the above-mentioned feeds evenly into small slices (the amount of feed should be such that the larvae can finish eating within one day), put them into a high-temperature sterilized plastic film box with a diameter of 3 cm and a height of 5 cm, and use a 100 μl pipette to Draw 10μl2.6×10 6 The beet armyworm nucleopolyhedrosis virus liquid (SeNPV) of PIB / ml is evenly sprayed on t...

Embodiment 3

[0095] Example 3: Comparison of the effects on SeNPV proliferation of carrageenan and starch mixed with optimized ratio and agar as the coagulant. The ratio of the coagulant and water in the feed is shown in Table 5.

[0096] table 5

[0097] Feed number Carrageenan (g) Starch (g) Water (ml) Agar (g)

[0098] 21 1.4 2 110 0

[0099] Control feed -- -- 100 1.6

[0100] All the other ingredients of feed and the preparation of feed are with embodiment one.

[0101] Except that the larvae of beet armyworm used were 4th instar, all the other experimental procedures were the same as in Example 2.

[0102] The experimental results are shown in Table 6.

[0103] The comparison of No. 621 diet and control diet on the proliferation of SeNPV

[0104] Infection Mortality Average SeNPV content per head SeNPV Total SeNPV content per gram of worm carcasses

[0105] feed number

[0106] (%) (×10 8 PIB / head) (×10 8 PIB / g) (×10 8 PIB)

[0107] 21 87.8±6.9aA 20....

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Abstract

The present invention relates to the application of using carragheen and starch as a coagulator for insect artificial diet, which uses carragheen and starch to take up 0.5%-10% and 0.5%-30% by dry weight in total composition of insect artificial diet separately or uses 0.5-2.0 gram carragheen and 0.5-8 gram starch instead of 1 gram agar in present insect artificial diet as maintaining the other compositions and scales to be unchanged. The present invention uses cheap starch and carragheen instead of agar as coagulator of insect artificial diet so that the cost of the artificial diet can be mush decreasd as well as the production process can be simplified in order to fit the large scale of feeding the insects.

Description

technical field [0001] The invention relates to a coagulant for artificial feed for insects, in particular to the application of carrageenan and starch as the coagulant for artificial feed for Noctuidae insects. [0002] By mixing carrageenan and starch in a certain ratio, it is used as a coagulant for the artificial feed of Noctuidae insects, effectively replacing the agar in the original feed. Background technique [0003] Most of the current insect artificial diets use agar as a coagulant. Although agar has good coagulation performance, high water retention capacity, and is a non-nutritive coagulant, for using artificial feed to raise insects on a large scale, agar has its fatal shortcoming, that is, the price is higher (the current market price of agar for food About 200 yuan / kg. At present, in many artificial feeds for insects, the cost of coagulant agar accounts for 50%-75% of the total cost of the feed. Because the proportion of agar in the cost of artificial feeds f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K20/163A23K50/90A23L29/25
Inventor 陈其津李广宏刘朝燊
Owner SUN YAT SEN UNIV