Brewing process

Beer is a carbonated alcoholic beverage obtained by alcoholic fermentation of malt wort boiled with hops. The process of making beer is known as brewing.

Brewing beer involves microbial activity at every stage, from raw material production and malting to stability in the package. Most of these activities are desirable, as beer is the result of a traditional food fermentation, but others represent threats to the quality of the final product and must be controlled actively through careful management, the daily task of maltsters and brewers globally.

The purpose of brewing is to convert a starch source into a sugary liquid called wort and to convert the wort through the fermentation process effected by yeast into the alcoholic beverage. There are several steps in the brewing process, which include malting, milling, mashing, lautering, boiling, fermenting, conditioning, filtering, and packaging.

Brewing begins by crushing the malted grain between iron rollers. The grist is then mixed with warm water until it forms a mash of porridge-like consistency. Then supplementary grains are added, and the temperature of the mash is raised from 38 °C to 77 °C, at a rate that allows time for the various enzymes to act.

There are three main fermentation methods, warm, cool and wild or spontaneous. During fermentation, the wort becomes beer in a process where the yeast converts sugar into alcohol and carbon dioxide. This requires a week to months depending on the type of yeast and strength of the beer.

Larger brewing companies, tend to manage their own in-house strains of yeast, including the storage of master cultures. Back-ups of these organisms are deposited with third parties. Storage of cultures in liquid nitrogen is deemed preferable in terms of survival, shelf life, and genetic stability compared to storage on agar, in broth, or by lyophilization.
Brewing process

Instant oats

Oats are used in breakfast cereals and baked goods. Oats become in several types: instant or quick, old fashioned or rolled and steel-cut. Quick cooking or instant oats are the thinnest flakes. Some people think they have a raw taste compared to other oats.

Instant oats are generally prepared by cooking or gelatinized flaked oats, then reducing the particles size and thickness.

These steps greatly enhance water penetration and reduce the need for kitchen cooking to gelatinize the starch. They are the fastest cookers of all type of oats.

Instant oats cook up in hot water in one to two minutes. They may be the easiest on the gut, but they have the least flavor.

Avoid using these in baking; their very fine texture can make baked goods turn out gummy.
Instant oats 

The Wet Milling of Corn

The corn wet milling process was developed in the early 19th century at which time alkali was used. This wet milling is a complex used for manufacturing of corn starch and the various sweeteners obtained from its hydrolysis.

The development of wet milling was based on the observation that a white, insoluble granular material settled to the bottom of the pan when quantities of cut tubers were washed.

As opposed to dry milling, which separates the anatomical parts of the corn kernel, wet milling separates the kernel components into their chemical constituents.

In the corn wet milling process, the use of SO2 is very important. It breaks down the protein matrix that surrounds the starch particles and increases starch yield during milling.

The wet milling process consist of cleaning the grain, an initial soaking in water to soften the kernels, milling to separate the components through screening, centrifuging and washing and finally, production of the end products: starches, sweeteners, proteins and co-products.

An enzymatic corn wet milling then has been developed that’s shows the potential to reduce or completely eliminate the use of SO2 and produce starch yields comparable to the conventional corn wet milling.

Wet milling creates a high-quality cornstarch slurry used in the production of syrup as well as in the manufacture of high quality dry starch.
The Wet Milling of Corn

Cleaning process of the grain

Grain cleaning reduces the problems that occur during storage and handling. Clean grains save storage space and increase marketability.

Over the years there has been rapid development of machinery for grain cleaning. The one most often used employ the air screen system, which was the basis for the oldest cleaning machines and still is the easiest and most effective form of cleaning bulk grain.

The mill is the point where cereals are transformed from agricultural commodities to foods or food ingredients.

Physical cleaning takes place in the mill to remove straw and chaff, stones, soil and metal fragments, which could damage the mill, damaged or ergot-infected grains, seed other than the cereal grain required, insects and other foreign matter.

In preparing wheat cleaning, the wheat is blown into hopper scales that record the quantity of uncleaned wheat. Some of the coarser impurities are removed by this process.

The grain then passed over a series of coarse and fine sieves that further remove contaminating materials, including chaff and straw.

The various dry cleaning processed used in modern four mills have little effect on the microbiological condition of the grain.

The efficiency of the cleaning operation is dependent on the efficiency of the machine, the selection of appropriate screens for the particular task and the competence of the operator.
Cleaning process of the grain