阅读说明：本技术 一种黄花菜的杀青工艺 (Fixation process of day lily ) 是由 肖智雄 于 2020-07-24 设计创作，主要内容包括：一种黄花菜的杀青工艺,包括以下步骤：S1：将新鲜的黄花菜均匀铺设于杀青容器的底面,送入一级杀青腔中；S2：在一级杀青腔中,60-70℃的蒸汽由杀青容器的从下往上、70-80℃的蒸汽由杀青容器的从上往下喷向黄花菜,杀青时间为5~15s；S3：通过输送装置自动输送至二级杀青腔中,70-80℃的蒸汽由杀青容器的从下往上、80-90℃的蒸汽由杀青容器的从上往下喷向黄花菜,杀青时间为15~30s；S4：通过输送装置自动输送至三级杀青腔中,65-70℃的蒸汽由杀青容器的从下往上、75-80℃的蒸汽由杀青容器的从上往下喷向黄花菜,杀青时间为10~20s；S5：黄花菜进行三级杀青后,通过输送装置自动输送至冷却室中进行冷却。本发明能够防止黄花菜产生较大温差,黄花菜色泽基本无差异,杀青均匀性好。(A water-removing process for day lily comprises the following steps: s1: uniformly paving fresh daylily on the bottom surface of a water-removing container, and feeding the daylily into a primary water-removing cavity; s2: in the primary de-enzyming cavity, spraying 60-70 ℃ steam from bottom to top of the de-enzyming container and 70-80 ℃ steam from top to bottom of the de-enzyming container to the day lily for 5-15 s; s3: automatically conveying the mixture into a secondary de-enzyming cavity through a conveying device, and spraying steam at the temperature of 70-80 ℃ from bottom to top and steam at the temperature of 80-90 ℃ from top to bottom of a de-enzyming container to the day lily, wherein the de-enzyming time is 15-30 s; s4: automatically conveying the mixture into a three-stage de-enzyming cavity through a conveying device, and spraying 65-70 ℃ steam from bottom to top of a de-enzyming container and 75-80 ℃ steam from top to bottom of the de-enzyming container to the daylily, wherein the de-enzyming time is 10-20 s; s5: and after three-stage enzyme deactivation, the daylily is automatically conveyed to a cooling chamber through a conveying device for cooling. The invention can prevent the day lily from generating large temperature difference, the color of the day lily is basically not different, and the enzyme deactivating uniformity is good.)

1. A water-removing process of day lily is characterized by comprising the following steps:

s1: uniformly paving fresh daylily on the bottom surface of a water-removing container, and feeding the daylily into a primary water-removing cavity;

s2: in the primary de-enzyming cavity, spraying steam of 60-70 ℃ from bottom to top of the de-enzyming container and steam of 70-80 ℃ from top to bottom of the de-enzyming container to the day lily for primary pre-de-enzyming, wherein the de-enzyming time is 5-15 s;

s3: after primary pre-fixation is carried out on the day lily, the day lily is automatically conveyed to a secondary fixation cavity arranged at the rear side of the primary fixation cavity through a conveying device, steam at the temperature of 70-80 ℃ is sprayed to the day lily from bottom to top of a fixation container and steam at the temperature of 80-90 ℃ from top to bottom of the fixation container, secondary fixation is carried out, and fixation time is 15-30 s;

s4: after the day lily is subjected to secondary de-enzyming, the day lily is automatically conveyed to a three-level de-enzyming cavity arranged at the rear side of the secondary de-enzyming cavity through a conveying device, steam at the temperature of 65-70 ℃ is sprayed to the day lily from bottom to top of a de-enzyming container and steam at the temperature of 75-80 ℃ from top to bottom of the de-enzyming container, and the three-level de-enzyming is carried out for 10-20 s;

s5: and after three-stage enzyme deactivation, the daylily is automatically conveyed to a cooling chamber through a conveying device for cooling.

2. The green removing process of the day lily according to claim 1, wherein in S1, the laying thickness of the day lily is 3-10 cm.

3. The de-enzyming process of day lily according to claim 1 or 2, wherein the de-enzyming container is placed on a conveying device.

4. The de-enzyming process of day lily according to claim 1 or 2, wherein in S5, the cooling step comprises: and cooling the day lily subjected to the third-level enzyme deactivation for 8-10 minutes.

5. The de-enzyming process of day lily according to claim 1 or 2, wherein the de-enzyming time of the primary pre-de-enzyming is 8-12 s; the water removing time of the secondary water removing is 20-25 s; and the water removing time of the three-stage water removing is 12-18 s.

Technical Field

The invention relates to the technical field of day lily processing, in particular to a water-removing process of day lily.

Background

The day lily is a special vegetable with flower buds as harvest objects, the flower buds are abnormally vigorous in metabolism after being picked from plants, and cause huge economic loss to vegetable growers within 3-5h due to deterioration such as respiration consumption, enzymatic browning, flowering and microbial decay, so that the vegetables must be de-enzymed in time after being picked.

The traditional method has long water-removing time and uneven water-removing, which causes serious nutrition loss. In order to solve the problems, a two-stage enzyme deactivation process is adopted in the prior art, the activity of enzymes in flower buds of the daylily is preliminarily destroyed through the first-stage enzyme deactivation process, browning is prevented, and the loss of nutrient substances is reduced; the second-stage enzyme deactivating process further destroys the activity of enzymes in the flower buds of the daylily. However, the temperature difference between cold and hot in the cooling process is large due to the high temperature of the secondary de-enzyming, so that the color difference is large, the pre-de-enzyming is not performed, the temperature difference in the whole de-enzyming process cannot be kept small, and the de-enzyming uniformity is poor. In addition, the existing two-stage enzyme deactivation process needs to be transferred out from the first-stage enzyme deactivation chamber and then put into the second-stage enzyme deactivation chamber, and the temperature difference can be increased in the transfer process.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the water-removing process of the day lily, which has the advantages of small temperature difference, uniform water-removing and small color difference.

The technical scheme of the invention is as follows: a water-removing process for day lily comprises the following steps:

s1: uniformly paving fresh daylily on the bottom surface of a water-removing container, and feeding the daylily into a primary water-removing cavity;

s2: in the primary de-enzyming cavity, spraying steam of 60-70 ℃ from bottom to top of the de-enzyming container and steam of 70-80 ℃ from top to bottom of the de-enzyming container to the day lily for primary pre-de-enzyming, wherein the de-enzyming time is 5-15 s;

s3: after the day lily is subjected to primary pre-fixation, the day lily is automatically conveyed to a second stage arranged at the rear side of the primary fixation cavity through a conveying device

In the water-removing cavity, steam at the temperature of 70-80 ℃ is sprayed to the day lily from bottom to top of the water-removing container and steam at the temperature of 80-90 ℃ is sprayed to the day lily from top to bottom of the water-removing container, and secondary water-removing is carried out for 15-30 s;

s4: after the day lily is subjected to secondary fixation, the day lily is automatically conveyed to a third fixation chamber arranged at the rear side of the secondary fixation chamber through a conveying device

In the green removing cavity, steam at the temperature of 65-70 ℃ is sprayed to the day lily from bottom to top in the green removing container and steam at the temperature of 75-80 ℃ is sprayed to the day lily from top to bottom in the green removing container, and three-stage green removing is carried out for 10-20 s;

s5: and after three-stage enzyme deactivation, the daylily is automatically conveyed to a cooling chamber through a conveying device for cooling.

Further, in S1, the paving thickness of the daylily is 3-10 cm.

Further, the water-removing container is arranged on the conveying device.

Further, in S5, the cooling step includes: and cooling the day lily subjected to the third-level enzyme deactivation for 8-10 minutes.

Further, the water-removing time of the primary pre-water-removing is 8-12 s; the water removing time of the secondary water removing is 20-25 s; and the water removing time of the three-stage water removing is 12-18 s.

The invention has the beneficial effects that:

through adopting tertiary the mode of completing, have following advantage: (1) the temperature difference is small, the fixation is uniform, and the indicated daylily has no obvious difference in color; (2) high temperature, fast enzyme deactivation, low nutrition loss and high dish yield; (3) the cooling temperature can be paved, so that the day lily is prevented from being uneven in color and luster due to too large temperature difference caused by cold and hot; (4) the water-removing time is fast.

Carry out intermittent type formula transport with day lily automatically through setting up conveyor, and arrange around between the tertiary chamber of completing and between the chamber of completing and the cooling chamber to need not the manual work and take out day lily and shift, effectively prevent that day lily from cooling in transportation process, can carry the day lily fast, prevent that day lily from producing the great difference in temperature.

Because the steam flows from bottom to top, the temperature of the steam drops when the steam passes through the fresh day lily, and the steam with higher temperature is supplemented from the top, so that the temperature in the de-enzyming cavity is close to the same.

Detailed Description

The present invention will be described in further detail with reference to specific examples.

A water-removing process for day lily comprises the following steps:

s101: uniformly spreading fresh daylily on the bottom surface of the water-removing container, and feeding into a primary water-removing cavity.

Specifically, the paving thickness of the daylily is 3-10 cm, and the optimal paving thickness is 5-8 mm. According to the invention, through three-stage enzyme deactivation, the daylily can be laid thicker, and the enzyme deactivation effect can be achieved, so that the one-time enzyme deactivation quantity of the daylily is more, and the working efficiency is greatly improved. After entering the first-stage enzyme deactivating cavity, the enzyme deactivating container is placed on the conveying device so as to facilitate the automatic conveying of the enzyme deactivating container.

S102: in the primary de-enzyming cavity, steam of 60-70 ℃ is sprayed to the day lily from bottom to top of the de-enzyming container and steam of 70-80 ℃ is sprayed to the day lily from top to bottom of the de-enzyming container, primary pre-de-enzyming is carried out, and de-enzyming time is 5-15 s.

Specifically, the loss of nutrient substances in the day lily can be greatly reduced by pre-de-enzyming the day lily, and the pre-de-enzyming can ensure that the subsequent temperature difference is small and the de-enzyming is uniform, so that the color and luster of the processed day lily strips are not obviously different. Preferably, the steam with the temperature of 65 ℃ is sprayed to the day lily from the bottom to the top of the water-removing container and the steam with the temperature of 75 ℃ is sprayed to the day lily from the top to the bottom of the water-removing container. The water-removing time of the first-stage pre-water-removing in the embodiment is 5-15 s, preferably 10s, and the water-removing time is short, and only the day lily needs to be preheated.

S103: after the day lily is subjected to primary pre-fixation, the day lily is automatically conveyed to a second chamber arranged at the rear side of the primary fixation chamber through a conveying device

In the stage de-enzyming cavity, steam of 70-80 ℃ is sprayed to the day lily from bottom to top of the de-enzyming container and steam of 80-90 ℃ is sprayed to the day lily from top to bottom of the de-enzyming container for secondary de-enzyming, and the de-enzyming time is 15-30 s.

Particularly, the daylily subjected to primary pre-fixation is automatically conveyed to a secondary fixation cavity at the rear side through the conveying device without the need of conveying the daylily to a secondary fixation cavity at the rear side

The daylily after the primary pre-fixation is manually taken out and transferred, so that the daylily can be prevented from being cooled in the conveying process, the daylily can be quickly conveyed, and the daylily is prevented from generating large temperature difference. Through carrying out second level deactivation of enzymes to day lily, the temperature is high, and the enzyme deactivation is fast, makes various enzymes in the day lily lose activity rapidly under the continuous effect of high temperature, prevents the brown stain, reduces the loss of nutrient substance, simultaneously, prevents the bud opening to keep original shape. The water-removing time is second-level, and the second-level water-removing time is longer than the first-level pre-water-removing time, so that the effect of completely removing enzyme is achieved, and active substances which are contained in the day lily and are beneficial to a human body are kept as much as possible. Preferably, steam of 75 ℃ is sprayed to the day lily from bottom to top of the water-removing container and steam of 85 ℃ is sprayed to the day lily from top to bottom of the water-removing container for secondary water-removing, wherein the water-removing time is 20 s.

S104: after the day lily is subjected to secondary fixation, the day lily is automatically conveyed to a third stage arranged at the rear side of the secondary fixation cavity through a conveying device

In the water-removing cavity, steam at 65-70 ℃ is sprayed to the day lily from bottom to top in the water-removing container and steam at 75-80 ℃ is sprayed to the day lily from top to bottom in the water-removing container, and three-stage water-removing is carried out for 10-20 s.

Specifically, the temperature of tertiary de-enzyming is reduced compared with the temperature of secondary de-enzyming, so that the temperature difference can be kept small, and a cushion is made for the subsequent cooling step, namely, the temperature difference suffered by the day lily can not be overlarge during the subsequent cooling, so that the color of the day lily can be kept uniform. The time of the third-stage enzyme deactivation is shorter than that of the second-stage enzyme deactivation, and the enzyme deactivation efficiency can be greatly improved. Preferably, steam of 70 ℃ is sprayed to the day lily from bottom to top in the de-enzyming container and steam of 80 ℃ is sprayed to the day lily from top to bottom in the de-enzyming container to carry out three-stage de-enzyming, and the de-enzyming time is 15 s.

S105: and after three-stage enzyme deactivation, the daylily is automatically conveyed to a cooling chamber through a conveying device for cooling.

Specifically, the cooling manner of the present embodiment is natural cooling to reduce the temperature difference. Preferably, cooling the day lily subjected to three-stage enzyme deactivation for 10 minutes, and reducing the temperature of the day lily to 20-40 ℃. And the temperature of the third stage enzyme deactivation is lower than that of the second stage enzyme deactivation, so that the cooling time can be greatly shortened.

This embodiment has following advantage through adopting tertiary the mode of completing: (1) the temperature difference is small, the fixation is uniform, and the indicated daylily has no obvious difference in color; (2) high temperature, fast enzyme deactivation, low nutrition loss and high dish yield; (3) can be used for laying a mat for cooling temperature, and prevent the day lily from being uneven in color and luster due to overlarge temperature difference of cold and hot. This embodiment carries out intermittent type formula transport with day lily automatically through setting up conveyor, and between the tertiary chamber of completing and between the chamber of completing and the cooling chamber tandem to need not the manual work and take out day lily and shift, effectively prevent that day lily from cooling in transportation process, can carry the day lily fast, prevent that day lily from producing the great difference in temperature. In addition, as the steam flows from bottom to top, the temperature is reduced when the steam passes through the fresh day lily, and at the moment, the steam with higher temperature is supplemented from the top, so that the temperature in the de-enzyming cavity is close to the same.