阅读说明：本技术 一种香榧保鲜冷藏方法 (Fresh-keeping and cold-storage method for Chinese torreya ) 是由 叶金红 黄少平 张朗锋 求鹏英 陈斐洋 李金昌 喻卫武 宋丽丽 叶珊珊 于 2021-09-17 设计创作，主要内容包括：本发明公开了一种香榧保鲜冷藏方法,包括如下步骤：S1、去青蒲后熟：将成熟的香榧青蒲采摘下来,脱蒲后放入后熟库中,在温度23-26℃、湿度85-95％、富氧环境下使其果仁继续发育形成原胚；S2、降低温度至5-10℃,继续保持湿度85-95％、富氧环境下使其果仁进入休眠状态。本发明提供的香榧保鲜冷藏方法,通过使香榧进入休眠状态进行保存,保证了香榧在保存时的含水量,有效避免香榧在保存过程中油脂酸化或转为多糖,一方面保留了原来具有的果仁营养,另一方面不影响香榧口感,且保存时间长。(The invention discloses a torreya grandis fresh-keeping and refrigerating method, which comprises the following steps: s1, removing green cattails and after-ripening: picking up ripe torreya grandis green cattail, removing cattail, putting into an after-ripening warehouse, and continuously developing kernels to form a protoembryo under the conditions of a temperature of 23-26 ℃, a humidity of 85-95% and an oxygen-enriched environment; s2, reducing the temperature to 5-10 ℃, and keeping the humidity at 85-95% to make the nuts enter a dormant state in an oxygen-rich environment. According to the fresh-keeping and cold-storage method for the Chinese torreya, the Chinese torreya is stored in a dormant state, so that the water content of the Chinese torreya during storage is ensured, the phenomenon that oil is acidified or converted into polysaccharide during the storage of the Chinese torreya is effectively avoided, the original nutlet nutrition is kept, the taste of the Chinese torreya is not influenced, and the storage time is long.)

1. A torreya grandis fresh-keeping and refrigerating method is characterized by comprising the following steps:

s1, removing green cattails and after-ripening: picking up ripe torreya grandis green cattail, removing cattail, putting into an after-ripening warehouse, and continuously developing kernels to form a protoembryo under the conditions of a temperature of 23-26 ℃, a humidity of 85-95% and an oxygen-enriched environment;

s2, reducing the temperature to 5-10 ℃, and keeping the humidity at 85-95% to make the nuts enter a dormant state in an oxygen-rich environment.

2. The method for fresh keeping and cold storage of torreya grandis according to claim 1, wherein the temperature of the after-ripening warehouse in the step S1 is set to 25 ℃.

3. The torreya fresh-keeping and refrigerating method according to claim 1, wherein the humidity of the after-ripening warehouse in the step S1 is set to 90%.

4. The torreya grandis fresh-keeping and cold-storage method according to claim 1, wherein the development time in the step S1 is 30 days.

5. The torreya grandis fresh-keeping and cold-storage method according to claim 1, wherein the preservation time of the fresh-keeping and cold-storage method is not more than three years.

Technical Field

The invention relates to the technical field of Chinese torreya preservation processes, and in particular relates to a Chinese torreya fresh-keeping and refrigerating method.

Background

Torreya grandis fruits are edible fruits growing on Torreya grandis trees, and are mainly produced in Shaoxing Huishi mountain vessels of Zhejiang. Before 80 s, because the growth of Chinese torreya trees is extremely slow, the soil adaptability is poor, and the artificial planting is less. Since 90 years, with the continuous rising of the price of dry Chinese torreya fruits and the innovation of artificial seedling raising technology, the Chinese torreya planting area is continuously enlarged, the yield of Chinese torreya fruits is rapidly increased in recent years, and the phenomenon that the supply of Chinese torreya fruits is larger than the demand appears sometimes. The preservation requirement of the torreya grandis fruits is higher, so that a preservation technology of the torreya grandis fruits is needed in the field. However, because the oil content of the Chinese torreya fruit is very high, the quality of the Chinese torreya fruit cannot be ensured according to the conventional dry fruit refrigeration technology or finished product refrigeration technology, and the sale of the Chinese torreya fruit in one year causes adverse effects to the market. The existing preservation technology reduces the water content in the Chinese torreya nuts, so that the taste is hard after the Chinese torreya nuts are fried and processed in the later period, and the quality of the Chinese torreya nuts is influenced by the preservation mode.

Disclosure of Invention

The invention aims to provide a torreya grandis fresh-keeping and refrigerating method to overcome the defects that during the preservation process of torreya grandis, grease is acidified or converted into polysaccharide, the taste is poor and the preservation time is short.

In order to achieve the above purpose, the invention provides the following technical scheme: a torreya grandis fresh-keeping and refrigerating method comprises the following steps:

s1, removing green cattails and after-ripening: picking up ripe torreya grandis green cattail, removing cattail, putting into an after-ripening warehouse, and continuously developing kernels to form a protoembryo under the conditions of a temperature of 23-26 ℃, a humidity of 85-95% and an oxygen-enriched environment;

s2, reducing the temperature to 5-10 ℃, and keeping the humidity at 85-95% to make the nuts enter a dormant state in an oxygen-rich environment.

Preferably, the temperature of the after-ripening warehouse is set to 25 ℃ in step S1.

Preferably, the humidity of the after-ripening warehouse is set to 90% in step S1.

Preferably, the development time in step S1 is 30 days.

Preferably, the preservation time of the fresh-keeping and cold-storage method is not more than three years.

Compared with the prior art, the invention has the advantages that: according to the fresh-keeping and cold-storage method for the Chinese torreya, the Chinese torreya is stored in a dormant state, so that the water content of the Chinese torreya during storage is ensured, the phenomenon that oil is acidified or converted into polysaccharide during the storage of the Chinese torreya is effectively avoided, the original nutlet nutrition is kept, the taste of the Chinese torreya is not influenced, and the storage time is long.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further specifically described below by way of examples.

Examples

A torreya grandis fresh-keeping and refrigerating method comprises the following steps:

s1, removing green cattails and after-ripening: picking up ripe torreya grandis green cattail, removing cattail (namely peeling off green cattail), putting the torreya grandis green cattail into an after-ripening warehouse, and setting the temperature in the after-ripening warehouse to be about 25 ℃, the humidity to be about 90% and an oxygen-enriched environment, so that nuts continue to develop for about 30 days to form protoembryos;

s2, reducing the temperature to 5-10 ℃, continuously keeping the humidity of about 90% and oxygen-enriched environment, and keeping the temperature at 5-10 ℃ because the critical temperature required by the germination of the Chinese torreya fruits is 12 ℃, so that the Chinese torreya nuts can enter a dormant state, the oil acidification or the polysaccharide conversion of the Chinese torreya nuts in the preservation process is effectively inhibited, and a certain water content is ensured, thereby the original nut nutrition can be kept and the taste is ensured.

The preservation time of the fresh-keeping and cold-storage method is not more than three years.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.