Medicament capable of delaying postharvest rot of Manihot esculenta Crantz tuberous root, and preparation method and application of medicament

Abstract

The invention discloses a medicament capable of delaying postharvest rot of a Manihot esculenta Crantz tuberous root, and a preparation method and application of the medicament. The medicament is an aqueous solution and comprises abscisic acid, melatonin and chitosan; and in each litre of medicament, the concentration of the abscisic acid is 400-600[mu]M / L, the concentration of the melatonin is 200-400[mu]M / L, and the concentration of the chitosan is 10-30mM / L. The level of active oxygen in the Manihot esculenta Crantz tuberous root dipped in the medicament disclosed by the invention is lowered, the browning and rotting speed of the Manihot esculenta Crantz tuberous root can be delayed, and in addition, the content of the vitamin C and the starch of the Manihot esculenta Crantz tuberous root is not affected. In addition, the method is convenient, practical, efficient and safe and has a good development potential in a storage, transportation and selling process of the Manihot esculentaCrantz tuberous root.

Description

technical field

[0001] The present invention relates to post-harvest fresh-keeping technology of cassava tubers, more specifically to a medicament for delaying post-harvest cassava tubers and its preparation method and application. Background technique

[0002] Cassava is one of the world's three largest potato crops and the fifth largest food crop in the world. Cassava is an energy plant with great potential in my country, mainly used for the production of industrial starch, fuel ethanol, bio-based materials, etc. The rapid appearance of brown streaks around the postharvest vascular bundles of cassava tubers, leading to rot, is called "postharvest rot". The post-harvest rot of cassava seriously restricts the mass supply and post-harvest utilization of cassava. Therefore, delaying cassava postharvest rot has always been an indispensable link in the cassava industry chain. At present, the techniques for delaying postharvest rot of cassava are mainly through hybrid breeding...

Examples

preparation example Construction

[0034] The preparation method of the above-mentioned medicament for delaying postharvest rot of cassava tubers is characterized in that: comprising the following steps:

[0035] 1) Weighing abscisic acid, melatonin and chitosan successively;

[0036] 2) Add abscisic acid, melatonin and chitosan into water, stir and dissolve to obtain a medicament; wherein, in each liter of the medicament, the concentrations of abscisic acid, melatonin and chitosan are 400-600 μM / L, 200 μM / L and 200 μM / L respectively. -400 μM / L and 10-30 mM / L.

[0037] The method for delaying post-harvest rot of cassava tubers comprises the following steps:

[0038] 1) Harvesting: dig out the cassava root and try to keep the surface integrity of the cassava root;

[0039] 2) Cleaning: Wash the cassava in the previous step to remove the surface soil with clear water;

[0040] 3) Soaking: soaking the cassava in the medicament of claim 1;

[0041] 4) Storage: Store the cassava tubers soaked in step 3 at room t...

Embodiment 1

[0069] The preparation method of the medicament 1 for delaying postharvest rot of cassava tubers comprises the following steps:

[0070] 1) Weighing abscisic acid, melatonin and chitosan successively;

[0071] 2) Add abscisic acid, melatonin and chitosan into water, stir and dissolve to obtain a medicament; wherein, in each liter of the medicament, the concentrations of abscisic acid, melatonin and chitosan are 500 μM / L and 300 μM / L respectively and 20mM / L.

Embodiment 2

[0073] The preparation method of present embodiment 2 is basically the same as the preparation method of embodiment 1, and difference is:

[0074] In drug 2, the concentrations of abscisic acid, melatonin and chitosan were 600 μM / L, 200 μM / L and 10 mM / L, respectively.

technical field

[0001] The present invention relates to post-harvest fresh-keeping technology of cassava tubers, more specifically to a medicament for delaying post-harvest cassava tubers and its preparation method and application. Background technique

[0002] Cassava is one of the world's three largest potato crops and the fifth largest food crop in the world. Cassava is an energy plant with great potential in my country, mainly used for the production of industrial starch, fuel ethanol, bio-based materials, etc. The rapid appearance of brown streaks around the postharvest vascular bundles of cassava tubers, leading to rot, is called "postharvest rot". The post-harvest rot of cassava seriously restricts the mass supply and post-harvest utilization of cassava. Therefore, delaying cassava postharvest rot has always been an indispensable link in the cassava industry chain. At present, the techniques for delaying postharvest rot of cassava are mainly through hybrid breeding...

Examples

preparation example Construction

[0034] The preparation method of the above-mentioned medicament for delaying postharvest rot of cassava tubers is characterized in that: comprising the following steps:

[0035] 1) Weighing abscisic acid, melatonin and chitosan successively;

[0036] 2) Add abscisic acid, melatonin and chitosan into water, stir and dissolve to obtain a medicament; wherein, in each liter of the medicament, the concentrations of abscisic acid, melatonin and chitosan are 400-600 μM / L, 200 μM / L and 200 μM / L respectively. -400 μM / L and 10-30 mM / L.

[0037] The method for delaying post-harvest rot of cassava tubers comprises the following steps:

[0038] 1) Harvesting: dig out the cassava root and try to keep the surface integrity of the cassava root;

[0039] 2) Cleaning: Wash the cassava in the previous step to remove the surface soil with clear water;

[0040] 3) Soaking: soaking the cassava in the medicament of claim 1;

[0041] 4) Storage: Store the cassava tubers soaked in step 3 at room t...

Embodiment 1

[0069] The preparation method of the medicament 1 for delaying postharvest rot of cassava tubers comprises the following steps:

[0070] 1) Weighing abscisic acid, melatonin and chitosan successively;

[0071] 2) Add abscisic acid, melatonin and chitosan into water, stir and dissolve to obtain a medicament; wherein, in each liter of the medicament, the concentrations of abscisic acid, melatonin and chitosan are 500 μM / L and 300 μM / L respectively and 20mM / L.

Embodiment 2

[0073] The preparation method of present embodiment 2 is basically the same as the preparation method of embodiment 1, and difference is:

[0074] In drug 2, the concentrations of abscisic acid, melatonin and chitosan were 600 μM / L, 200 μM / L and 10 mM / L, respectively.

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