China Animal Husbandry and Veterinary Medicine ›› 2021, Vol. 48 ›› Issue (8): 2820-2829.doi: 10.16431/j.cnki.1671-7236.2021.08.015

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

Research Progress on Nutritional Value and Feed Safety of Food Waste

CUI Yiyan1, DENG Dun1, TIAN Zhimei1, LU Huijie1, LIU Zhichang1, LI Jiazhou1, MA Xianyong1,2, ZHANG Qi3, LAN Yonghui3   

  1. 1. State Key Laboratory of Livestock and Poultry Breeding, Key Laboratory of Animal Nutrition and Feed Science in South China, Ministry of Agriculture and Rural Affairs, Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangdong Engineering Technology Research Center of Animal Meat Quality and Safety Control and Evaluation, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;
    2. Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming 525000, China;
    3. Shenzhen Teng-Lang Recycling Development Co., Ltd., Shenzhen 518000, China
  • Received:2021-02-03 Online:2021-08-20 Published:2021-08-19

Abstract: With the improvement of people's quality of life, the catering industry is developing rapidly, and a large amount of food waste (FW) is generated, which seriously affects food safety and causes environmental pollution.At present, the resource utilization of food waste has received widespread attention, among which feed processing technology can realize the regeneration of resource value, meet the requirements of environmental sustainable development, and has economic feasibility.Food waste is rich in nutrients, containing 14.93% to 94.20% dry matter (DM), 13.53% to 42.90% crude protein (CP), 3.89% to 31.57% ether extract (EE), 0.24% to 16.50% ash (Ash), 2.07% to 30.70% crude fiber (CF), 6.72% to 38.90% neutral detergent fiber (NDF), and 5.29% to 25.20% acid detergent fiber (ADF).The safety of food waste includes physical safety, biosafety and chemical safety.The physical safety of food waste can be guaranteed during the collection and pretreatment process.The biosafety of food waste is mainly that untreated food waste is easy to breed bacteria, such as Salmonella, Escherichia coli, and feeding animals with uncooked food waste can cause aftosa, swine fever, and transmissible spongiform encephalopathy.The chemical safety of food waste is that toxins, pesticides, and heavy metals should meet the standards, and the influence of anti-nutritional factors, nitrites, and detergents should be paid attention to.On the whole, food waste has high nutritional value, which can meet the needs of animal growth to a certain extent.However, the biosafety limits the application and development of food waste as feed.

Key words: food waste; feed; nutritional value; biosafety

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