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A kind of method for macadamia nut preservation germplasm

A germplasm and nut technology, applied in the field of macadamia macadamia germplasm preservation, can solve the problems of short storage time, achieve the effects of increasing germination rate, shortening the process of imbibition, and facilitating breathing

Active Publication Date: 2021-07-23
SOUTH ASIAN TROPICAL AGRI SCI RES INST OF GUANGXI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The fat content of macadamia nuts is very high, so special care should be taken during storage to prevent spoilage. At present, macadamia nut germplasm resources are mostly stored in sealed and refrigerated storage. The storage time is about 1 year, and the storage time is relatively short.

Method used

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  • A kind of method for macadamia nut preservation germplasm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for preserving germplasm of macadamia nuts, comprising the following steps:

[0027] (1) Seed selection: Select mature shelled macadamia nuts with a diameter of 25 mm, a kernel moisture content of 15.5%, and a smooth and undamaged shell surface as the germplasm;

[0028] (2) Drying: drying the germplasm until the water content of the nuts is less than 5%;

[0029] (3) Primary freezing: Put the germplasm in a freezer at -5°C for 78 hours to obtain frozen germplasm, and the humidity in the freezer is 65%;

[0030] (4) Coating: Coating a layer of coating agent on the outer surface of the frozen germplasm to obtain the coated germplasm. The coating agent consists of 60 parts by weight of talcum powder and 10 parts of nutritional agent , 2 parts of water-retaining agent, 0.2 part of antibacterial agent, 0.01 part of insect repellant, 5 parts of film-forming agent, and 15 parts of sorbitol. The coating method is as follows: take frozen germplasm, water and The coat...

Embodiment 2

[0039] A method for preserving germplasm of macadamia nuts, comprising the following steps:

[0040] (1) Seed selection: Select mature shelled macadamia nuts with a diameter of 30 mm, a kernel moisture content of 20.0%, and a smooth, undamaged shell surface as the germplasm;

[0041] (2) Drying: drying the germplasm until the water content of the nuts is less than 5%;

[0042] (3) One-time freezing: Put the germplasm in a freezer at a temperature of -1°C and freeze for 90 hours to obtain frozen germplasm. The humidity in the freezer is 75%;

[0043] (4) Coating: Coating a layer of coating agent on the outer surface of the frozen germplasm to obtain the coated germplasm. The coating agent consists of 80 parts by weight of talcum powder and 15 parts of nutritional agent , 3 parts of water-retaining agent, 0.5 part of antibacterial agent, 0.03 part of insect repellent, 8 parts of film-forming agent, 20 parts of sorbitol, and the coating method is as follows: take frozen germplas...

Embodiment 3

[0052] A method for preserving macadamia germplasm, comprising the following steps:

[0053] (1) Seed selection: Select mature shelled macadamia nuts with a diameter of 28 mm, a kernel moisture content of 18.8%, and a smooth and undamaged shell surface as the germplasm;

[0054] (2) Drying: drying the germplasm until the water content of the nuts is less than 5%;

[0055] (3) Primary freezing: put the germplasm in a freezer at -3°C for 85 hours to obtain frozen germplasm, and the humidity in the freezer is 70%;

[0056] (4) Coating: Coating a layer of coating agent on the outer surface of the frozen germplasm to obtain the coated germplasm. The coating agent consists of 70 parts by weight of talcum powder and 12 parts of nutritional agent , 2.5 parts of water-retaining agent, 0.3 part of antibacterial agent, 0.02 part of insect repellent, 7 parts of film-forming agent, 18 parts of sorbitol, and the coating method is as follows: take frozen germplasm, water and The coating agen...

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Abstract

The invention relates to a method for preserving germplasm of macadamia nuts. Coating at room temperature after freezing can make the coating more uniform, can increase the barrier property of the coating to moisture and oxygen, and can effectively prevent oil and fat oxidation. Acidification is beneficial to the stability of the genetic properties of the germplasm; the film-forming agent also contains alliin, which can effectively prevent the invasion of diseases and insect pests, and at the same time avoid the phenomenon of adhesion between the germplasm; put the secondary frozen germplasm into Oscillation treatment in constant temperature water bath equipment can solve the problem of water penetration of hard germplasm seed coat, shorten the process of imbibition and increase germplasm germination rate.

Description

technical field [0001] The invention relates to the technical field of agricultural planting, in particular to a method for preserving germplasm of macadamia nuts. Background technique [0002] Macadamia nut alias: Queensland chestnut, macadamia walnut, macadamia nut, Queensland fruit, is a tree nut native to Australia. Macadamia nuts are evergreen trees and dicotyledonous plants. The crown is tall, with 3-4 whorls of leaves, lanceolate, leathery, smooth, with spiny serrations on the edges. Racemes axillary, beige flowers, spherical fruit, leathery, hard endocarp, beige to light brown kernels. It is suitable for growing in mild, humid and windy areas. Among the many dried fruits in the world, macadamia nuts have the highest economic value and have always enjoyed the reputation of "the king of dried fruits". Distribution area: Eastern Australia, New Caledonia, Sulawesi, Indonesia. In addition, macadamia nuts also have high nutritional and medicinal value. [0003] Germp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01C1/00A01C1/06A01C1/08
CPCA01C1/00A01C1/06A01C1/08
Inventor 谭秋锦陈海生黄锡云汤秀华许鹏王文林郑树芳何铣扬覃振师莫庆道贺鹏张涛宋海云肖海艳
Owner SOUTH ASIAN TROPICAL AGRI SCI RES INST OF GUANGXI
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