Pumpkin and carrot pectin efficient extraction technology and product development
Project Description:
Through the evaluation of the characteristics of pumpkin and carrot pectin and the study of extraction technology, this project determined that pumpkin and carrot can be used as industrial pectin raw materials, and its pectin is high-ester pectin, and the product meets the requirements of the pectin line standard QB2484, which is suitable for use as a food additive such as gelling agent, thickener and stabilizer, and can also be used as a functional product. The efficient extraction technology of pectin developed in this project can reduce the production energy consumption by more than 1/3, and the mathematical model of pectin ultrasonic auxiliary extraction technology established is conducive to the automatic production control of pectin. The project investment is not less than 20 million yuan, with an annual output of 300 tons.
Innovation:
1) The ultrasonic auxiliary extraction technology is used for pectin production, which reduces the energy consumption by more than 1/3 compared with the traditional acid extraction technology.
2) The mathematical model of pectin ultrasonic auxiliary extraction technology established is conducive to the realization of automated production control of pectin.
Industry (Market) Applications:
This project improves the efficiency of pectin extraction, reduces the energy consumption of pectin extraction and quality control problems during pectin extraction.
Under the general trend of low-sugar and low-calorie food becoming the direction of food consumption, the market demand for international pectin still has a gap of 10,000 tons, which is rising at a rate of 5% to 10% per year, and the demand for pectin in China is expected to exceed 5,000 tons. At present, the market price of pectin is about 100 yuan per kilogram, such as extracting pectin from carrot processing waste as a food additive, which can add about 1,000 yuan per ton. Carrying out comprehensive utilization work such as extracting pectin from pumpkin and carrot processing waste has certain economic benefits.
Expert Profile:
Zhang Xuejie, Ph.D., Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, mainly engaged in the research of the quality and safety of fruits and vegetables from "farmland to table" and the research of post-harvest preservation processing technology, has presided over and participated in more than 20 international and domestic scientific research projects, with the first author in "Chinese Agricultural Science", "Horticultural Journal", "Frontiers in Microbiology", "Food Control", "Scientia Horticulturae" He has published 42 papers in academic journals and international academic seminars, written 2 books, won 2 national invention patents, obtained 1 appraisal result of the Ministry of Agriculture, formulated 4 national, industry and local standards, and won the title of advanced individual of Beijing Food Society and outstanding teacher of graduate school of Chinese Academy of Agricultural Sciences for many times.
Rice straw return technology can increase yield by 15%
On September 9th, sponsored by the China Rice Research Institute, the Scientific and Technological Innovation Project of the Chinese Academy of Agricultural Sciences "Rice 'Grain Storage technology' Major Task Variety Technology Integration and Demonstration Project" - the observation of the technology of full amount of in-situ decomposition of straw in cold land and the on-site production testing and acceptance of 1,000 mu demonstration pieces were held in Baoqing County, Heilongjiang Province.
This technology has the characteristics of good low-temperature rotting effect, reducing the use of chemical fertilizers and pesticides, breaking soil compaction, protecting black soil, improving rice toppling resistance and improving rice quality. The expert group calculates the actual yield of the measured field plot. The average yield of this high-quality variety "Rice Flower Fragrance Selection" thousand mu demonstration piece exceeds the yield of 50-100 kg/mu of high-quality "Rice Flower Aroma Selection" cultivated by conventional technology.
Source: Chinese Academy of Agricultural Sciences
The national variety of "Zhongtian No. 2 Alfalfa" passed the examination
Recently, the "Zhongtian No. 2 Alfalfa" independently cultivated by the anti-stress forage breeding and utilization team of the Lanzhou Institute of Animal Husbandry and Veterinary Medicine of the Chinese Academy of Agricultural Sciences passed the examination and approval of the National Grass Variety Approval Committee, becoming the third new variety of the "Zhongtian" series of Lanzhou Animal Husbandry and Medicine Institute. This variety is suitable for planting in the Loess Plateau of China's warm and semi-dry climate, as well as in the northwest and north China, and has obvious variety advantages in increasing production, improving quality and efficiency of alfalfa, and has broad application prospects.
Sheep grass seed harvest new equipment was successfully developed
With the support of the Inner Mongolia Autonomous Region Science and Technology Major Special Project, the Grassland Institute of the Chinese Academy of Agricultural Sciences has joined hands with domestic universities and enterprises such as Inner Mongolia Agricultural University to set up a mechanical equipment research and development research team to carry out research and development of "high-efficiency, low-damage and high-clarity grass legume forage seeds special harvesting technology and equipment". The scientific research team conducted a number of harvest performance tests according to the agronomic requirements of sheep grass seed harvesting and the physical characteristics of sheep grass, and successively solved the problems of cutting table entanglement, threshing device blockage, threshing impurity, large harvest loss, and difficult to unload grass seeds, and found suitable parameters to reduce sheep grass seed loss and improve the clarity of sheep grass seeds. The development of mechanized harvesting equipment for sheep grass seeds has successfully realized the "planting and harvesting of grass", and also laid the foundation for the industrialization and expansion of sheep grass seeds.
The Chinese Academy of Agricultural Sciences proposed the optimal nitrogen application rate for drip irrigation winter wheat in the North China Plain
Recently, the principle of insufficient irrigation and the new technology team of the Institute of Farmland Irrigation of the Chinese Academy of Agricultural Sciences used the crop growth model DSSAT to propose the optimal nitrogen application rate of drip irrigation winter wheat in the North China Plain, and through comprehensive analysis, the nitrogen application rate of the drip irrigation winter wheat in the North China Plain was 180 kg/ha. Compared with the field experiment, the study fully considers different meteorological scenarios, which can provide a more scientific theoretical basis for the nitrogen management of drip irrigation winter wheat, and also provide a new research method for the optimal management of nitrogen fertilizer.
A study by the Chinese Academy of Agricultural Sciences revealed the suitable irrigation depth of winter wheat under the cultivation mode of high and low furrows
High and low furrow cultivation is a new cultivation mode with good potential for water saving and yield increase. This mode is used to irrigate water in low furrows, and wheat on high furrows meets water consumption requirements by absorbing side seepage water. The study analyzed the stable isotope values of hydrogen and oxygen from different water sources such as soil water and precipitation, and determined the root water absorption source of winter wheat: winter wheat mainly uses 0-60 cm of soil to store water during the growth period. For irrigation with an irrigation quota of 90 mm, only 69.07% of the irrigation water storage will be stored in the main root absorber of 0-60 cm, and more than 30% of the irrigation water will be lost and difficult to be used by crops. Because the irrigation depth should be fully considered to match the main root absorbent layer, the study recommends that the planned irrigation depth of winter wheat in the high and low furrow cultivation mode should not exceed 60 cm.
The College of Resources and Environment of Northwest A&F University has made progress in the elimination of microcystis aeruginosa in water bodies
Microcystis aeruginosa is the most common dominant algae species in cyanobacterial blooms, with strong vitality and reproductive ability, and will produce a large number of algal organic matter and secrete microcystins with hepatotoxicity, neurotoxicity, skin irritation and nephrotoxicity during its growth and reproduction. These algal organic compounds and toxins pose a great threat to the aquatic ecological environment and human health, the study proposes the use of a new medium to block the discharge plasma system to remove microcystemis aeruginosa in water, studied the inactivation efficiency of the system on microcystemis aeruginosa and the degradation effect of intracellular organic matter and toxins released during inactivation, and finally revealed the mechanism of this method to eliminate microcystems aeruginosa and metabolic by-products in water.
Source: Northwest A&F University
Huazhong Agricultural University has made new progress in improving the salt tolerance of rapeseed by seeding cerium oxide nanoparticles
In the study, the researchers synthesized polyacrylic modified cerium oxide nanoparticles (PNC) with low Ce3+/Ce4+ doping ratios. Rapeseed was induced by PNC for 8 hours, which significantly improved the germination rate, fresh weight and water absorption of rapeseed under salt stress (200 mM NaCl). The results proved that PNC improved the germination ability of rapeseed seeds under salt stress by relieving oxidative stress and maintaining ionic balance. This study further demonstrates the good application potential of plant nanobiotechnology in improving crop stress resilience, and also shows that interdisciplinary has the potential to provide new research alternatives or technical solutions for scientific problems in research practice production.
Source: Huazhong Agricultural University
The Guangxi Key R&D Program Project "Research on Breeding and Breeding Technology of New Varieties of Water Lilies with Food Appreciation and Dual Use" undertaken by Guangxi Hot Crop passed the on-site verification
On September 18th, guangxi flower association, Guangxi Zhuang Autonomous Region Forestry Research Institute, Guangxi Vocational and Technical College organized by Guangxi Science and Technology Information Society to Guangxi Pingguo Hualian Science and Technology Research Institute and Guangxi Hot Crop Institute to conduct on-site inspection of Guangxi Key R&D Program Project "Research on Breeding and Breeding Technology of New Varieties of Water Lilies with Food Appreciation and Use".
Since the implementation of the project in October 2018, focusing on the problems of single water lily varieties and backward seedling breeding research in Guangxi, the selection and breeding of new varieties of water lilies with food appreciation and use, the research on seedling breeding technology, the collection and preservation of germplasm resources and the analysis of genetic diversity have been carried out, 63 water lily germplasm resources have been collected, 2505 square meters of water lily germplasm resources garden has been established, and 7189 square meters of water lily variety breeding base has been built. 206,000 water lily seedlings were bred, and a cultivation base of new and old water lilies of the food and appreciation type was built for 18.62 mu.
The expert group conducted on-site inspection of the project through on-site inspection, listening to reports, checking relevant materials, etc., and unanimously agreed that the results of the verification met the requirements of the assessment indicators, and the project successfully passed the on-site verification.
Source: Guangxi Institute of Subtropical Crops