Sweet potato starch waste, which is the byproduct of sweet potato starch processing, makes up about 75% of the weight of fresh potatoes. In Hunan Province alone, there are only a few hundred sweet potato starch processing enterprises, despite the crop's wide economic value. Potatoes are one of the most commonly cultivated crops globally, with 50% to 70% of the world's production being processed and utilized. In developed countries, this percentage can reach as high as 80%. However, in China, the processing rate remains below 5%, resulting in millions of tons of potato residue generated annually in northern regions each year.
Sweet potato and potato residue are rich in protein, amino acids, and other essential nutrients. With proper treatment, they can be transformed into high-quality animal feed. To address this issue, a new and innovative microbial fermentation technology has been developed. This method offers an efficient and cost-effective way to convert these residues into valuable feed resources.
The process involves adding a type II feed starter to the potato and sweet potato slag, adjusting the moisture content to approximately 55%, and then sealing the mixture in a tank, concrete pit, or plastic bag for anaerobic fermentation. Within just three days, the material is fully fermented into high-quality feed. This feed can replace up to 40% of the expensive commercial feed used for livestock such as pigs, cattle, and sheep, making it a sustainable and economically viable solution for farmers. This technology not only reduces waste but also enhances the value of agricultural byproducts, supporting both environmental and economic sustainability.
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Zhoushan Haiwang Seafood Co., Ltd. , https://www.haiwangseafoods.com