Method for rapidly detecting storage quality of aseptically packaged sea cucumber protein peptide powder based on DVS and GC-IMS technologies

Abstract

The invention discloses a method for rapidly detecting storage quality of aseptically packaged sea cucumber protein peptide powder based on DVS and GC-IMS technologies. The sea cucumber protein peptide powder is used as the raw material, and the DVS (dynamic vapor absorption method) and GC-IMS (gas chromatography-ionic migration spectrometry) are comprehensively used for detecting and identifying.A moisture absorption kinetic curve and a moisture absorption isotherm of the sea cucumber protein peptide powder can be acquired through a DVS system, and the volatile substances are separated through the GC-IMS, the sea cucumber protein peptide powder after the separation of the volatile substances is finished enters an IMS unit to be measured twice, thereby successfully constructing a flavor fingerprint of the sea cucumber protein peptide powder. Through the method disclosed by the invention, the sea cucumber protein peptide powder packaged and stored under different conditions can be distinguished; the method can be applied to the quality grading and shelf life research of the sea cucumber protein peptide powder, has the features of being significant, less in raw material consumption,simple in operation, rapid in detection speed and high in accuracy.

Description

technical field [0001] The invention relates to the technical field of flavor chemical analysis, in particular to a method for rapidly detecting the storage quality of aseptically packaged sea cucumber protein peptide powder based on DVS and GC-IMS technologies. Background technique [0002] "Compendium of Materia Medica Supplements" once recorded: Sea cucumber (sea cucumber) is sweet and salty, nourishing the kidney, benefiting the essence, urinating, aphrodisiac and treating impotence. One of them is not only a precious food, but also a high-quality medicinal material. There are more than 140 kinds of sea cucumbers in China, of which there are more than 20 kinds of edible sea cucumbers. Sea cucumbers contain a lot of protein and a variety of trace elements that are beneficial to the human body. It is a high-quality nutritious food that does not contain cholesterol. With the deepening of research and the popularization of peptide knowledge, peptide products will be recogniz...

AI Technical Summary

Problems solved by technology

[0002] "Compendium of Materia Medica Supplements" once recorded: Sea cucumber (sea cucumber) is sweet and salty, nourishing the kidney, benefiting the essence, urinating, aphrodisiac and treating impotence. One of them is not only a precious food, but also a high-quality medicinal material. There are more than 140 kinds of sea cucumbers in China, of which there are more than 20 kinds of edible sea cucumbers. Sea cucumbers contain a lot of protein and a variety of trace elements that are beneficial to the human body. It is a high-quality nutritious food that does not contain cholesterol. With the deepening of research and the popularization of peptide knowledge, peptide products will be recognized and accepted by more manufacturers and consumers. The delicacies on the Internet have become high-quality health foods with higher nutritional value and more convenient consumption in people's daily life; however, sea cucumber protein peptide powder will suffer from moisture absorption-stickiness-caking and other gradual deterioration during processing and storage. phenomenon, which greatly reduces its storage stability and seriously affects its application. Not only that, after the peptide powder absorbs moisture, it is particularly prone to denaturation and deterioration with the increase of storage time, and is accompanied by the production of volatile substances, resulting in its peptide texture. A series of adverse consequences such as changes in nutrition, loss of nutrition, and loss of function have seriously affected product quality and stability. Studies have shown that the volatile components of sea cucumber protein peptide powder during aseptic wet and aseptic dry storage are mainly 2,3-butandione (2 ,3-butanedione) and Dimethyl disulfide (dimethyl disulfide), 2,5-dimethylpyrazine (2,5-dimethylpyrazine), 1-Pentanol (n-pentanol), Pentanal (valeraldehyde), Butanoic acid (butyric acid), 3-methyl- and Ethanol (ethanol), Benzaldehyde (benzaldehyde), etc. Among them, the content of 2,3-butanedione and dimethyl disulfide is very high on day 0, and there is basically no other time , n-pentanol and valeraldehyde are produced in large quantities on the first day, and then the concentration gradually decreases. At the same time, a small part of volatile organic compounds, such as butyric acid, 3-methyl- and ethanol, gradually increase with the storage time. In the packaging, the storage time has a great influence on the flavor of sea cucumber protein peptide powder. After the sample was stored for one day, the concentration and types of volatile organic compounds increased significantly; with the prolongation of storage time, the overall concentration of volatile organic compounds decreased. At the same time, butyric acid, A small number of volatile organic compounds such as 3-methyl-increase gradually with the prolongation of storage time. Under sterile dry packaging conditions, the concentration of a large number of volatile organic compounds gradually decreases with the prolongation of storage time, while the concentration of a small amount of volatile organic compounds gradually increases with the prolongation of storage time

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