A new sandwich film prepared by 3D printing can show pork freshness
On February 15, the team of Li Suqing and Liu Yaowen of Sichuan Agricultural University used 3D printing technology to prepare a new anthocyanin/chitosan/lemongrass essential oil sandwich-like multi-layer freshness indicator film that can intelligently display food freshness. The film also uses tapioca starch as a protective layer, increasing environmental adaptability.
Taking packaged pork as the experimental object, when the pork deteriorates, the color of the multi-layer indicator film changes from red to grayish blue, and the RGB color value of the indicator film can be scanned and automatically analyzed through the smartphone application to determine the freshness of the pork. In addition to the freshness indicator function, lemongrass essential oil in the film can increase the release rate as the environmental pH value increases, reflecting the intelligent packaging preservation function.
Source: Chinese Academy of Agricultural Sciences
A new method for rapid detection of freshness of livestock and poultry meat is introduced
Recently, the high-quality functional animal products technology innovation team of the Beijing Institute of Animal Husbandry and Veterinary Medicine of the Chinese Academy of Agricultural Sciences has developed a new small molecule fluorescent probe for rapid detection of freshness of livestock and poultry meat. Compared with the currently commonly used pH meter and pH test strip, the freshness detection method based on fluorescent probe has the advantage of high throughput, which provides a new method for rapid determination of livestock and poultry meat quality.
Source: Chinese Academy of Agricultural Sciences
Artificial open-mouthed mandarin fish in February cold spring early bloom success
In recent years, on the basis of the approved new species of mandarin fish "Huakang No. 1", The team of Professor Liang Xufang of the Mandarin Fish Research Center of Huazhong Agricultural University has been committed to the selection and breeding of the new strain of easy-to-tame feed mandarin fish "Huakang No. 2". This strain has a high domestication rate, fast growth and high feed utilization rate. "Huakang No. 2" can use biological bait (non-bait fish) as an open bait, which can realize the whole process of mandarin fish feed culture.
Mandarin fry are bred in early spring
Source: Huazhong Agricultural University
Advances have been made in the study of the response of carbon-oxygen circulation functional genes in black soil to long-term fertilization
Fertilizer management and application patterns directly affect crop yields and significantly drive changes in soil microbial communities, which respond to long-term fertilization related to the efficient use of fertilizer nutrients and the improvement of agricultural productivity. The scientific research team of the Chinese Academy of Sciences analyzed the carbon and nitrogen cycle function genes of the black soil farmland, and found that the single application of organic fertilizer or the combination of chemical fertilizer significantly changed the community structure of the carbon and nitrogen function genes of the black soil, and increased the abundance of carbon-related genes for the degradation of cellulose and pectin; the long-term organic fertilizer added significant enrichment of assimilation and alienation of nitrate reduction related functional genes, which helped to improve the ammonium nitrogen content and nitrogen fertilizer utilization rate of black soil; and the combined application of organic fertilizer fertilizers would further lead to a significant increase in the abundance of functional genes related to the denitrification of black soil. It shows that excessive nitrogen nutrient input can cause the risk of soil nitrogen loss through gaseous form. This study provides a microbiological theoretical basis for promoting the reduction of chemical fertilizers in black soil areas and constructing a long-term mechanism for organic fertilizer application.
Source: Chinese Academy of Sciences
Upgraded juice production at a carbon neutral plant in the Netherlands
Recently, GeA in Germany offered europe's leading smoothie and juice producer Pure Beverages the world's first carbon-neutral juice processing technology upgrade.
GEA first focused on energy and resource efficiency in juice processing and manufacturing, incorporating heating and cooling requirements into the system. At the same time, a GEA-designed heat pump will recover waste heat from the refrigeration system and reduce the pasteurization temperature from 95°C to 90°C – increasing the energy balance by 3%. The system uses warm water instead of steam to thaw frozen juices. In addition, GEA has developed an automated cleaning system that minimizes the required cleaning surface area, and also uses the groundbreaking Fluivac technology to clean pipes with air instead of water, allowing Innocent to recover 98 percent of the juice from process piping, which will save water and chemical use and reduce manual tasks and downtime at manufacturing plants.
Source: Chinese Academy of Agricultural Sciences
Research on non-thermophysical processing techniques
Buckwheat grains contain a variety of nutrients and functional components, so whole buckwheat powder can be used to produce gluten-free foods and health foods. Using buckwheat whole powder as material, non-heat treatment technology using dielectric barrier discharge plasma (DBD) and electron beam irradiation (EBI) treated whole buckwheat powder under different dose conditions, the results show that DBD and EBI treatment will lead to the production of particles with smaller particle size, high-dose EBI treatment will make it reacclud, the smaller the particles, the higher the brightness and whiteness value of the whole powder. Both DBD and EBI treatments have a positive effect on hydraulic retention, solubility and expansion, and have little effect on nutrient composition. The DBD treatment affects the hydrogen-containing functional group and intermediate-range crystal structure and significantly improves oil absorption, water absorption and freeze-thaw stability, but negatively affects the bioactive ingredient and antioxidant activity, while the low-dose EBI treatment (≤10 kGy) simultaneously increases the total phenol flavonoid content and antioxidant activity.
The results show that DBD and EBI technologies are safe methods to improve the processing characteristics of whole powder, and low-dose EBI treatment has a protective effect on the total phenol flavonoid content and antioxidant activity, and may be more suitable for the processing of functional raw materials.
Source: Northwest A&F University
Hydrogen water cultivation can increase the active ingredient content of five-fingered peach
Five-fingered peach is a common food and medicine homologous plant in lingnan region of China. Researchers at the South China Botanical Garden of the Chinese Academy of Sciences found that hydrogen is involved in plant hormone signaling and adversity response, promotes plant growth and development and improves stress resistance, thus proposing the concept of "hydrogen agriculture" that reduces the use of chemical fertilizers and pesticides and ensures ecological safety and food safety. Experimental research on hydrogen water planting of five-fingered peach was carried out, and the results showed that hydrogen water planting significantly increased the content of active ingredients of five-fingered peach. In addition, it has been found that hydrogen molecules may regulate the expression of transcription factor genes associated with plant hormone signaling, stress resistance, and synthesis of secondary metabolites. It provides a theoretical basis for the application of "hydrogen agriculture" in the cultivation of Chinese herbal medicine.
Source: Chinese Academy of Sciences
Anti-cancer active molecules were found in agarwood flowers
Recently, when the team of Wang Yuehu, an associate researcher at the Kunming Institute of Botany of the Chinese Academy of Sciences, conducted anti-cancer drug screening, it was found that the ethanol extract of the agarwood flower had a significant inhibitory effect on human lung cancer, cervical cancer and other cancer cells.
Source: Chinese Academy of Sciences
Swedish Lund Vegan Company develops potato milk products
On February 18, according to the news of the Fruitnet.com website, plant milk has become a popular trend around the world in recent years, and plant milk manufacturers represented by The Swedish Veg of Lund have developed a series of DUG potato milk products. At present, three DUG potato milk products (original, sugar-free, coffee masters) have been super launched by large retailers such as British supermarket chain giant Waitrose & Partners.
The emergence of potato milk products provides lactose intolerants, as well as environmentalists and vegetarians, with a new way to supplement daily essential nutrients, which can meet the nutritional needs of multiple populations and have good market prospects.
Source: Chinese Academy of Agricultural Sciences
Operation Sweet Potato promotes security and health in Africa
On February 1, the International Potato Centre (CIP) successfully integrated biofortified sweet potatoes into popular ready-to-eat foods, increasing vitamin A intake in Kenya, Rwanda, Malawi and other African countries, IFT reported.
CIP has launched a project called "Sweet Potato Initiative for Safety and Health in Africa". One of the project's missions is to find ways to incorporate bio-fortified orange sweet potatoes into popular ready-to-eat foods like bread. A simple, economical method of mashed potato processing has been developed by the team of Tawanda Muzhingi of CIP and Antonio Magnaghi of Kenya, with a shelf life of four months, and made into sweet potato bread. Models for the cultivation of orange sweet potatoes by farmers' cooperatives, the production of mashed potatoes by small processors, and the production and sale of sweet potato bread by bakeries and supermarket chains have led to an increase in vitamin A consumption in several countries in sub-Saharan Africa.
Source: Chinese Academy of Agricultural Sciences
Marine fungi can effectively explain a variety of plastics such as polyethylene
Recently, Sun Chaomin's research group, a researcher at the Institute of Oceanology of the Chinese Academy of Sciences, has found for the first time the research results of marine fungi and enzymes that can effectively degrade polyethylene (PE) plastics. Marine fungi Alternaria alternata FB1 can effectively degrade PE with a depolymerization efficiency of up to 95%.
Researchers have recently improved the culture conditions of the fungus, which has greatly improved the degradation effect of PE plastic, in addition, the improved culture conditions of the fungus can effectively degrade a variety of plastics including polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), polyurethane (PUR), polyamide (PA) and biodegradable plastics.
The findings suggest that the fungus has the potential to develop environmentally friendly plastic degradation products, and its downstream bio-based materials can also be used to produce biological products such as antibiotics.
Degradation effect of the marine fungus Alternaria alternataFB1 on polyethylene plastics
After the improved conditions, the marine fungus Alternaria alternata FB1 has a significant degradation effect on a variety of plastics
Source: Chinese Academy of Sciences