7 results about "Cold injury" patented technology

This invention belongs to the field of post-harvest quality testing technology for agricultural products, specifically relating to a method for predicting the degree of chilling injury in bitter gourd. The method uses *Bitter Gourd 'Du Ruan'* as the research object, employing segmented pre-cooling treatment to measure indicators such as chilling injury index, respiration rate, weight loss rate, firmness, chlorophyll content, malondialdehyde content, and antioxidant enzyme activity during storage. This determines suitable pre-cooling conditions, explores the impact of different pre-cooling settings on its physiological quality and chilling injury development during storage, and constructs a bitter gourd chilling injury prediction model based on key indicators. The method for predicting the degree of chilling injury in bitter gourd provided by this invention offers a theoretical basis and technical support for optimizing post-harvest cold chain processes for bitter gourd, mitigating low-temperature damage, and extending shelf life.

This invention discloses the application of a UBC9 overexpression reagent in the preparation of drugs for preventing hypothermia caused by acute cold exposure, belonging to the field of biomedical technology. In vitro and in vivo experiments confirmed that acute cold exposure can induce a significant upregulation of UBC9 expression in skeletal muscle. Further, a skeletal muscle-specific UBC9 overexpression mouse model was constructed, revealing that UBC9 overexpression significantly enhances the core body temperature maintenance capacity of mice under acute cold exposure, upregulates the expression of the key thermogenic protein UCP3 and mitochondrial functional proteins TOMM20 and COX4, alleviates mitochondrial structural damage, and reduces mitochondrial oxidative stress levels. This invention reveals for the first time that UBC9 is a key target for the regulation of skeletal muscle thermogenicity under acute cold exposure. Enhancing UBC9 expression can effectively prevent or improve skeletal muscle thermogenic dysfunction caused by cold environments, providing a novel intervention strategy for developing drugs to prevent and treat cold injury.

The invention discloses a fresh-keeping method for relieving banana cold damage through constant magnetic field treatment. The fresh-keeping method comprises the following steps: step 1, material selection and pretreatment; step 2, constant magnetic field treatment; and step 3, packaging and storing. 4, evaluating the effect; a constant magnetic field physical treatment mode is adopted, chemical agents do not need to be added, harmful substance residues on the surfaces of fruits and vegetables are avoided, and the food safety requirement is met; one-time constant magnetic field treatment is only carried out at the initial stage of storage, the continuous treatment time is not longer than 12 hours, and compared with an intermittent continuous treatment mode or a whole-process continuous treatment mode in the prior art, energy consumption is remarkably reduced; the cold injury index of bananas in the low-temperature storage period can be effectively reduced, the peel brightness is improved, cold injury symptoms are delayed, the appearance and quality of fruits are maintained, and the cold injury relieving effect is optimal when the bananas are treated by a 5mT-intensity constant magnetic field for 12 hours or treated by the 5mT-intensity constant magnetic field for 8 hours.

The present application relates to a kind of irrigation farmland crop low temperature cold injury monitoring and diagnosis method, device, equipment and medium, comprising: collecting irrigation farmland multi-source data;Key indicators are calculated based on farmland multi-source data, wherein, key indicators include: land surface temperature LST, enhanced vegetation index EVI, sunlight-induced chlorophyll fluorescence SIF and solar declination delta;The key indicators calculated are calculated by the air temperature estimation model of pre-constructed irrigation farmland to obtain farmland daily average air temperature, and based on the low temperature cold injury determination standard of farmland crop, the monitoring and diagnosis of farmland crop low temperature cold injury are carried out.The present application can be based on the actual situation of irrigation farmland crop growth, utilize multi-source remote sensing data, consider the influence of surface temperature, crop growth, canopy physiology, solar radiation and other multi-factor, accurately estimate the air temperature of irrigation farmland, have strong operability, practicality is strong, it is easy to promote.

The present application relates to the field of food preservation technology, and specifically discloses a storage and preservation method for inhibiting cold injury of passion fruit. The method comprises the following steps: (1) pretreatment: passion fruits with the same shape and maturity and without diseases and mechanical damage signs are soaked in a sterilizing agent solution, and then the moisture on the surface of the passion fruits is dried; (2) preservation treatment: the passion fruits in step (1) are fully soaked in a methyl jasmonate solution, then are subjected to room temperature fumigation treatment with the soaking solution, and then the moisture on the surface of the passion fruits is dried; (3) storage: the passion fruits obtained in step (2) are put into a preservation box, sealed with a preservation film, and stored in a low-temperature environment at 5±1℃. The method can effectively inhibit the occurrence of cold injury, delay the browning of the fruits, prolong the shelf life of the passion fruits in low-temperature storage, and has high treatment efficiency and is safe and harmless.

This invention proposes a magnetic field-coupled low-temperature pre-storage preservation method for mitigating chilling injury during peach storage. During the low-temperature pre-storage process, a static magnetic field is coupled, which can be achieved using an external magnetic field on existing refrigeration equipment. This eliminates the need for significant modifications to existing refrigeration equipment, saving on equipment and time costs. The magnetic field-coupled low-temperature treatment method does not involve the use of chemical preservatives, thus avoiding food safety issues. It is a chemical-free, simple, efficient, green, and safe method for controlling chilling injury during peach storage. It does not require highly skilled operators, facilitating the widespread application of this invention.

The invention provides a refined economic forest fruit flowering phase low-temperature cold damage risk assessment early warning method and device, and relates to the technical field of disaster assessment, and the method comprises the steps: obtaining a multi-source historical data set corresponding to a research region, and planting economic forest fruits in the research region; preprocessing the multi-source historical data set to obtain a characteristic quantity matched with a forest fruit growth area and a forest fruit flowering phase of the economic forest fruit, and determining an event level corresponding to a low-temperature cold injury event occurring in the research area based on preprocessed historical single-station low-temperature cold injury event data; and based on the characteristic quantity of the economic forest fruit and the event level corresponding to the low-temperature cold injury event, training the neural network model to obtain a cold injury risk assessment and early warning model, the cold injury risk assessment and early warning model being used for performing assessment and early warning on the event level corresponding to the low-temperature cold injury event occurring in the forest fruit growth area in the forest fruit flowering phase. According to the invention, the precision degree and accuracy of low-temperature cold injury risk assessment early warning can be obviously improved.