Processing technology of dried macadamia nuts

Transferring standard, safe and high-quality dried macadamia nut processing technology

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Technological process of processing dried macadamia nuts

The processing technology of dried macadamia nuts is carried out according to the following basic steps:

Step 1: Prepare the ingredients

Fresh macadamia nuts are raw materials taken directly from the macadamia tree. When it comes to the harvest season, the ripe macadamia nuts will fall off on their own or need to be pounded and shaken to harvest depending on the variety of macadamia.

To ensure that dried macadamia nuts have high nutritional value and are safe for health, manufacturers need to choose a reputable source of fresh macadamia nuts, properly harvested so that the fruit and seeds are not moldy, the seeds are not rancid, petrified or germinated…

Step 2: Split the green peel

After harvesting, the green pods should be removed as soon as possible within about 24 hours. When the fruit is ripe, the water content in the peel is very high, about 45%, so if the green skin is left on for a long time, the kernel inside is very susceptible to moisture, mold and essential oils in the seeds are decomposed, affecting the fruit. to product quality.

Step 3: Sort (sort by size)

The purpose of the sizing stage is to help dry the macadamia batches evenly and easily classify the finished product before supplying to the market. Should be sorted before washing so that after drying, just split the shell and pack, limiting the contamination of dirt or other harmful sources during the sorting process by machine.

Step 4: Wash the macadamia nuts

Hạt macca sau khi xử lý khả năng cao sẽ còn bám bủi bẩn hoặc lớp vỏ xanh vẫn chưa được loại bỏ hoàn toàn. Vì vậy trước khi đưa vào sấy khô để bảo quản hoặc sấy chín thì hạt macca cần phải được rửa sạch để đảm bảo an toàn sức khỏe cho người sử dụng và kéo dài thời gian bảo quản.

Step 5: Drying

Macadamia dryer in Dak Lak

Macadamia nuts are considered a type of nut that requires high drying techniques because in order to achieve quality products, it is necessary to go through two drying stages with different temperature and drying time adjustments depending on each technological process. producer.

Stage 1: Drying

After washing and sorting, macadamia nuts are put into an oven (or drying oven) and dried at a temperature of 70 – 90 degrees Celsius for 8-10 hours to dry evenly.

Stage 2: Drying

When drying is satisfactory, the onion is dried for about 1 – 2 hours at a temperature of 110 – 130 degrees Celsius.

Step 6: Split the macadamia nuts

After satisfactory drying, macadamia nuts will be split into shells for easy use by customers. Depending on the sales specifications (leaving the shell on, separating the kernels, etc.), the processing techniques will be different.

Note that if the finished product is a whole macadamia nut, it should be split and split to avoid breaking the shell, making the finished product unsightly. This splitting process should be done after the macadamia is dried because the macadamia shell is dry and brittle so it is easy to split, helping the finished product to achieve better aesthetics. At the same time, this helps to keep the maximum flavor of the macadamia inside.

Step 7: Check, pack

Macadamia nuts can be packaged in a variety of specifications. Normally, macadamia products will be packed in vacuum bags or in jars (cans) with closed mouth edges to ensure during transportation and storage.

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