Wine Lees Fermentation Bag

1. Product introduction

The lees fermentation bag is an innovative product designed to facilitate the fermentation process of lees. As a by-product of the winemaking process, lees are rich in nutrients, but are often treated as waste. In recent years, with the emphasis on resource recovery and environmental protection, the reuse of wine lees has gradually become a research hotspot. The emergence of lees fermentation bag can not only improve the utilization rate of lees, but also effectively improve the environment, which has important economic and ecological value.

2. Structure and function of wine lees fermentation bag

Lees fermentation bags are usually made of breathable materials to ensure the supply of oxygen during fermentation while preventing external contamination. The design of fermentation bags should consider the following aspects:

Permeability: To ensure that oxygen can effectively enter the bag, promote the growth of aerobic microorganisms.

Anti-corrosion: to prevent the invasion of external bacteria and miscellaneous bacteria, to ensure the purity of fermentation.

Temperature resistance: It can withstand certain temperature changes to adapt to different stages of lees fermentation.

The main functions of the lees fermentation bag are:

Promote fermentation: By optimizing the microbial environment, promote the rapid propagation of beneficial microorganisms in lees and enhance the fermentation effect.

Improved nutritional value: During fermentation, the nutrients in the lees are converted by microorganisms into a more absorbable form, increasing its value as feed or fertilizer.

Waste reduction: Through fermentation, part of the lees can be converted into useful products, reducing environmental pollution.

3. Application of lees fermentation bag

Wine lees fermentation bags are widely used in agriculture, mainly reflected in the following aspects:

Feed: Fermented lees can be used as a quality feed to provide nutrients needed by animals.

Fertilizer: Fermented lees can be used as organic fertilizer to improve soil structure and improve soil fertility.

Biopesticides: Certain microorganisms can produce natural pesticides during the fermentation process, reducing the use of chemical pesticides.

Lees fermentation bags can also be used in food processing:

Soy sauce and vinegar preparation: The use of lees fermentation bags to promote the fermentation process and improve the flavor and nutritional value of the product.

Functional food: Research shows that the amino acids and vitamins rich in lees can be used in the development of functional food.

Role in environmental protection: The use of lees fermentation bags can effectively reduce environmental pollution of lees, reduce waste emissions, and have significant environmental benefits.

4. FAQ

What is a lees fermentation bag?

Lees fermentation bag is a kind of bag specially used for lees fermentation, which provides a relatively closed environment for lees fermentation and helps microorganisms to further transform the lees to improve its nutritional value or other utilization value.

What are the lees bags usually made of?

Generally made from durable, non-toxic plastic materials such as polyethylene (PE). This material has good flexibility, sealing, can withstand a certain pressure, and can prevent external air and impurities from easily entering the bag to affect the fermentation.

Why is lees fermented?

Fermentation can improve the nutrient content of the lees, further breaking down the large molecules in it into small molecules, improving its palatability and digestibility as feed (if used in farming), or improving its effectiveness as fertilizer (if used in agriculture).

How long does it take to ferment in a lees fermentation bag?

It usually takes about 3-10 days, and the specific time is affected by a variety of factors, such as the initial composition of the lees, the fermentation temperature, and the type of microorganisms used. For example, with the right temperature (20-30 °C) and the right amount of microbial inoculation, fermentation may be completed in 3-5 days.

How to determine whether the fermentation of lees in the fermentation bag is complete?

You can look at the color, smell and texture of the lees. Fermented lees may be darker in color, have a distinctive fermentation aroma (similar to koji or sour), and become softer and wetter in texture. It can also be detected by some indicators, such as pH value (generally pH value will be reduced after fermentation) or the number of microorganisms.

How are lees bags sealed?

Common sealing methods are zipper sealing and heat sealing. The zipper seal is easy to fill and check the fermentation situation, and the heat seal is more sealing and can effectively prevent air leakage.

What happens to the gases produced during fermentation?

Some fermentation bags are equipped with exhaust valves, which can automatically discharge carbon dioxide and other gases produced by fermentation; If there is no exhaust valve, it is necessary to open the bag regularly for exhaust, but to minimize the entry of outside air.

What is the effect of bad seal on lees fermentation?

Poor sealing will make the outside air enter the bag, destroy the anaerobic or micro-oxygen environment required for fermentation, resulting in the breeding of harmful microorganisms, such as mold growth, so that the lees mold deterioration, can not achieve the desired fermentation effect.

How to put lees into fermentation bags?

The lees after pretreatment (such as adjusting humidity, crushing, etc.) can be directly poured into the fermentation bag, and attention should be paid to avoid the lees from touching the mouth of the bag during the filling process, so as not to affect the sealing.

Can fermentation bags be reused?

If cleaned and undamaged, some lees fermentation bags can be reused, but the tightness should be checked before each use.

Are lees fermentation bags safe and hygienic?

Regular lees fermentation bags are made of materials that meet relevant standards and are safe and hygienic. However, the bag should be kept clean during use to avoid contamination.

Will fermentation bags contaminate the lees?

Normally not, because the material in the bags is non-toxic and harmless. But if the quality of the bag is poor, there are harmful substances oozing out, which may cause pollution to the lees.