The 21st century， mankind is faced with a more severe population growth， lack of important resources and environmental pollution pressures and challenges， and open up new resources， the path of sustainable development is the development of agricultural industrialization in China the only Insects as the largest on earth has not been fully utilized the resources of the treasure-house and has drawn greater Insect protein resource development and industrialization， will enter the high-tech， high-yield characterized by multi-level， comprehensive utilization Insect-rich protein， unsaturated fatty acids， trace elements， is a senior human nutrition Tenebrio molitor protein contains 18 kinds of amino acids， and essential to the human body contains eight kinds of amino acids， amino acid content accounted for 40% of the total， the ratio closer to the model of the human amino acid requirements， but also contains a variety of minerals， vitamins and trace elements， known as the "treasure house of animal " Tenebrio study abroad to improve the human immune system protein， anti-fatigue， anti-aging， reducing blood lipids and promote cholesterol In this paper， supercritical CO2 extraction technology of oil extraction Preparation of Tenebrio molitor Tenebrio molitor powder skim the optimum conditions were studied in order to get the Tenebrio molitor protein powder as raw material， the use of base formulation and enzyme formulations for proteins of Tenebrio molitor Extraction of the extraction process of these two comparative Tenebrio first preparation of crude protein to Defatted powder， supercritical CO2 extraction technology to skim handling of Tenebrio molitor， Tenebrio molitor in the oil extraction rate as an index， a three-factor three-level orthogonal experimental design to determine Tenebrio supercritical CO2 extraction of oil The optimum conditions are as follows: extraction temperature 45 ℃， the pressure of 25MPa， the time Tenebrio oil extraction rate of 99% Alkaline extraction with high extraction rate， the characteristics of low-cost， single-factor experiments and orthogonal test results show that the best conditions for alkali formulation as follows: alkali concentration of 0% mol / L， at 70 ℃， liquid-solid ratio 12:1 Tenebrio protein extraction conditions for 90min， in the extraction conditions， Tenebrio molitor protein extraction rate can reach 11%， 20% Enzymatic extraction with mild reaction conditions and substrate specificity of the characteristics of a Tenebrio different protease extract the role of protein have different approaches to protein extraction rate and the quality of protein extract as an index to compare the protease protein of Tenebrio molitor extract the effect of protease and that the complex compound extracted flavourzyme efficient and the final protein good quality To enhance the utilization of raw materials and Tenebrio molitor protein extraction rate， selection of these two enzymes for the enzyme Using two separate enzyme extraction， step-by-step for the extraction and re-extract the results of cooperation in comparison to the rate of protein extraction as an index for the reference degree of hydrolysis， the use of single factor experiments and orthogonal experiment to determine the Tenebrio protease extracted the most good process for the composite and complex protease flavourzyme to conduct two-enzyme complex extraction: 6% the amount of enzyme protease complex and composite plus flavourzyme than 1:3， liquid-solid ratio 9:1， extraction time 8 hours， pH 5 temperature of 55 ℃ Optimum conditions in the extraction of Tenebrio molitor protein， extraction rate can reach 83%， 17% Tenebrio body contains a variety of pigments and polyphenols， of which polyphenols easily in response to Maillard reaction， in the course of enzyme to produce more or less bitter peptide， and in order to maintain its optimum pH value range， the need to join the acid， alkali， resulting in a lot of salt， and the protein extract of Tenebrio molitor darker color， to be refined to deal with Tenebrio molitor 3% by adding activated carbon for decolorization， debittering available color clear extract protein taste Through the cation-anion exchange resin can remove 20% of the salt， and finally through the spray-drying the protein to be light yellow Alkali formulation obtained toxicology protein product safety evaluation results show that: protein products derived from the reference base is the basic security of the non-toxic (LD50 in mice is greater than its 120g/Kg)， therefore， can be used as high-protein and other animals In short， this paper two methods of protein extraction studies， the initial establishment of the Tenebrio molitor protein extraction methods and the best technology， the development of Tenebrio molitor for the future of protein resources to provide a theoretical Tenebrio molitor; protein; supercritical fluid extraction; alkali; Enzyme; extraction process; amino acid
Insects are a major group of arthropods and the most diverse group of animals on the Earth， with over a million described species more than half of all known living organisms with estimates of undescribed species as high as 30 million， thus potentially representing over 90% of the differing life forms on the Insects may be found in nearly all environments on the planet， although only a small number of species occur in the oceans， a habitat dominated by another arthropod group， the There are approximately 2，000 praying mantis， 5，000 dragonfly species， 20，000 grasshopper， 82，000 true bug， 120，000 fly， 110，000 bee， wasp and ant， 170，000 butterfly and moth， and 360，000 beetle species described to Estimates of the total number of current species， including those not yet known to science， range from two million to fifty million， with newer studies favouring a lower figure of about six to ten Adult modern insects range in size from a 139mm (00547 in) fairyfly (Dicopomorpha echmepterygis) to a 7centimetres (3in) long stick insect (phobaeticus chani) The heaviest documented insect was a Giant Weta of 70 g (5 oz)， but other possible candidates include the Goliath beetles Goliathus goliatus， Goliathus regius and Cerambycid beetles such as Titanus giganteus， though no one is certain which is truly the The study of insects (from Latin insectus， meaning "cut into sections") is called entomology， from the Greek， also meaning "cut into sections"
