摘要：
An accurate and nondestructive prediction method of lime acidity was established based on near infrared (NIR) spectroscopy and ensemble learning strategy. Dual-band spectra were obtained nondestructively with a single scan using a desk-top Fourier transform spectrometer and a grating portable spectrometer. Spectral preprocessing methods were used to eliminate the interferences in the spectra. The quantification models of available acidity (pH and 10−pH) and total acidity (TA) were developed with the ensemble learning strategy compared with partial least squares (PLS) and variable selection methods. The results indicated that due to the high-energy light source, the models of the grating portable spectrometer were much better than those of the Fourier transform spectrometer. Short-wave NIR (SWNIR) was more suitable for quantitative analysis of available acidity, while long-wave NIR (LWNIR) was more effective for quantitative analysis of TA. Besides, the models of available acidity were ahead of those of TA. Compared with PLS and variables selection methods, the ensemble learning strategy can produce models with higher prediction accuracy and better robustness. In the optimized models, the correlation coefficients of pH, 10−pH and TA for the prediction set were 0.84, 0.82 and 0.66, respectively. The experiment results show that accurate and nondestructive prediction of lime acidity can be achieved with the grating portable NIR spectrometer and ensemble learning strategy.
作者机构：
[Liu, Dongbo; Zhang, Zhixu] State Key Lab Subhlth Intervent Technol, Changsha 410128, Hunan, Peoples R China.;[Liu, Dongbo; Zhang, Zhixu] Hunan Agr Univ, Coll Hort, Changsha 410128, Hunan, Peoples R China.;[Qin, Dan] Hunan Agr Univ, Coll Food Sci & Technol, Changsha 410128, Hunan, Peoples R China.;[Guo, Xin] Cent South Univ Forestry & Technol, Coll Sci, Changsha 410004, Hunan, Peoples R China.;[Lin, Haiyan] Natl Res Ctr Engn Technol Utilizat Ingredients Bot, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Guo, X ] C;Cent South Univ Forestry & Technol, Coll Sci, Changsha 410004, Hunan, Peoples R China.
关键词：
Adsorption;Carbon dots;Pb(II);Starch
摘要：
The adsorption removal of lead (Pb) ions has become a crucial area of research due to the potential health hazards associated with Pb contamination. Developing cost-effective adsorbents for the removal of Pb(II) ions is significantly important. Hence, a novel fluorescent starch-based hydrogel (FSH) using starch (ST), cellulose nanofibrils (CN), and carbon dots (CD) was fabricated for simultaneous adsorption and detection of Pb(II). A comprehensive characterization of FSH, including its morphological features, chemical composition, and fluorescence characteristics, was conducted. Notably, FSH exhibited a maximum theoretical adsorption capacity of 265.9mg/g, which was 13.0 times higher than that of pure ST. Moreover, FSH was employed as a fluorescent sensor for Pb(II) determination, achieving a limit of detection (LOD) of 0.06μg/L. An analysis was further performed to investigate the adsorption and detection mechanisms of Pb(II) utilizing FSH. This study provides valuable insights into the production of a novel cost-effective ST-based adsorbent for the removal of Pb(II) ions.
摘要：
Self-constructed water-in-oil emulsions can be stabilized by a natural pentacyclic triterpenoid, betulin. A higher betulin concentration (3%) results in smaller emulsion droplet sizes. Microscopy, confocal laser scanning microscopy and rheology indicate that the stabilizing mechanism is attributed to betulin crystals on the emulsion interface and within the continuous phase, thereby enabling excellent freeze/thaw and thermal stability. The betulin Pickering emulsion (1%) significantly increased betulin bioaccessibility (22.4%) compared to betulin alone (0.2%) and betulin-oil physical mixture (7.9%). A higher level of betulin at 3% leads to smaller emulsion particle size, potentially resulting in a greater surface area. This, in return, promotes a higher release of free fatty acids (FFA), contributing to the release and solubilization of betulin from emulsions. Additionally, it leads to the formation of micelles, further increasing betulin bioaccessibility (29.3%). This study demonstrates Pickering emulsions solely stabilized by phytochemical betulin provides an innovative way to improve its bioaccessibility.
摘要：
Effects of steam explosion (SE) treatment (0.3-1.0 MPa, 30-90s) on the physicochemical and functional properties of dietary fiber (DF) extracted from tea residue were investigated. Results showed that SE led to the formation of porous and less compact microstructures of tea residues. Compared with the control sample (12.41 g/100 g), the content of soluble dietary fiber (SDF) was markedly increased by SE, reaching the maximum of 23.03 g/100 g when steam explored at 0.5 MPa for 90 s, due to the degradation of insoluble dietary fiber (IDF). The physicochemical and functional properties were significantly influenced by SE treatments. IDF exhibited decreased water holding capacity (WHC), swelling capacity (SC), oil holding capacity (OHC) after SE, whereas the physicochemical properties of SDF from SE-treated tea residues (0.3 MPa, 90s) were greatly improved. The glucose absorption capacity (GAC), cholesterol adsorption capacity (CAC), and nitrite ion adsorption capacity (NIAC) of both IDF and SDF showed trends of first increasing and then decreasing, indicating that excessive SE treatment resulted in poor properties of DF. These findings are of great value for the high-value utilization of agricultural by-product and development of functional foods.
摘要：
BACKGROUND: Dichlorvos (DDVP), as a highly effective insecticide, is widely used in agricultural production. However, DDVP residue in foodstuffs adversely affects human health. Conventional instrumental analysis can provide highly sensitive and accurate detection of DDVP, while the need of bulky and expensive equipment limits their application in resource-poor areas and on-site detection. Therefore, the development of easily portable sensing platforms for convenient, rapid and sensitive quantification of DDVP is very essential for ensuring food safety. RESULT: A portable colorimetric sensing platform for rapid and sensitive quantification of DDVP is developed based on nanozyme-participated highly efficient chromogenic catalysis. The Fe-Mn bimetallic oxide (FeMnOx) nanozyme possesses excellently oxidase-like activity and can efficiently catalyze oxidation of 3, 3', 5, 5'-tetramethylbenzidine (TMB) into a blue oxide with a very low Michaelis constant (K(m)) of 0.0522mM. The nanozyme-catalyzed chromogenic reaction can be mediated by DDVP via inhibiting the acetylcholinesterase (AChE) activity. Thus, trace DDVP concentration-dependent color evolution is achieved and DDVP can be sensitively detected by spectrophotometry. Furthermore, a smartphone-integrated 3D-printed miniature lightbox is fabricated as the colorimetric signal acquisition and processing device. Based on the FeMnOx nanozyme and smartphone-integrated lightbox system, the portable colorimetric sensing platform of DDVP is obtained and it has a wide linear range from 1 to 3000ngmL(-1) with a low limit of detection (LOD) of 0.267ngmL(-1) for DDVP quantification. SIGNIFICANCE: This represents a new portable colorimetric sensing platform that can perform detection of DDVP in foodstuffs with simplicity, sensitivity, and low cost. The work not only offers an alternative to rapid and sensitive detection of DDVP, but also provides a new insight for the development of advanced sensors by the combination of nanozyme, 3D-printing and information technologies.
摘要：
Lemon essential oil (LEO) is a common natural antibacterial substance, and encapsulating LEO into nanoemulsions (NEs) can improve their stability and broaden its application. Our study aimed to investigate the bacterial inhibitory effect of LEO-NEs against Escherichia coli (E. coli). Results showed that the minimum inhibitory concentration (MIC) of LEO-NEs was 6.25mg/mL, and the time-kill curve showed that E. coli were significantly killed by LEO-NEs after 5h of treatment at 1MIC. Flow-cytometry analysis showed that LEO-NEs adversely affected the cell-membrane depolarisation, cell-membrane integrity, and efflux pump function of E. coli. Confocal laser scanning microscopy demonstrated that 8MIC of LEO-NEs induced changes in the cell-membrane permeability and cell-wall integrity of E. coli. Proteomic results suggested that the mode of action LEO-NEs against E. coli was to enhance bacterial chemotaxis and significantly inhibit ribosomal assembly. They may also affect butyric acid, ascorbic acid and aldehyde metabolism, and sulphur-relay system pathways. In conclusion, LEO-NEs had potential application as a natural antibacterial agent for the control of E. coli in the food industry.
作者：
Si Qin;Chenghao Lv;Xin Liu;Tao Li;Shiyun Chen;...
期刊：
Antioxidants,2024年13(3):293- ISSN：2076-3921
通讯作者：
Si Qin<&wdkj&>Tao Li
作者机构：
Authors to whom correspondence should be addressed.;[Chenghao Lv; Xin Liu] College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China;[Shiyun Chen; Yuhang Yi; Xinnian Wen] College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China;Hunan Agricultural Product Processing Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China;[Si Qin] Authors to whom correspondence should be addressed.<&wdkj&>College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China<&wdkj&>College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China
通讯机构：
[Si Qin; Tao Li] A;Authors to whom correspondence should be addressed.<&wdkj&>College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China<&wdkj&>College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China<&wdkj&>Authors to whom correspondence should be addressed.<&wdkj&>Hunan Agricultural Product Processing Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
摘要：
Gardenia jasminoides Ellis is abundant in crocin and has a longstanding historical usage both as a dietary and natural ethnic medicine. Enhanced studies have increasingly revealed the intricate interplay between glycolipid metabolism and gut microbiota, wherein their imbalance is regarded as a pivotal indicator of metabolic disorders. Currently, the precise molecular mechanism of the crude extract of crocin from Gardenia jasminoides Ellis (GC) targeting gut microbiota to regulate glycolipid metabolism disorder is still unclear. Firstly, we explored the effect of GC on digestive enzymes (α-amylase and α-glucosidase) in vitro. Secondly, we investigated the effect of GC on the physical and chemical parameters of high-fat diet (HFD) rats, such as body weight change, fasting blood glucose and lipid levels, and liver oxidative stress and injury. Then, 16S rDNA sequencing was used to analyze the effects of GC on the composition and structure of gut microbiota. Finally, the impact of GC on the TLR4/Myd88/NF-κB signaling pathway in the intestine was assessed by Western Blotting. In the present study, GC was found to exhibit a hypoglycemic effect in vitro, by inhibition of digestive enzymes. In animal experiments, we observed that GC significantly reduced fasting blood glucose, TC, and TG levels while increasing HDL-C levels. Additionally, GC demonstrated hepatoprotective properties by enhancing liver antioxidative capacity through the upregulation of SOD, CAT, and GSH-Px, while reducing ROS. 16S rDNA sequencing results showed that GC had a significant effect on the gut microbiota of HFD rats, mainly by reducing the ratio of Firmicutes/Bateroidota, and significantly affected the genera related to glycolipid metabolism, such as Akkermansia, Ligilactobacillus, Lactobacillus, Bacteroides, Prevotellaceae, etc. The Western Blotting results demonstrated that GC effectively downregulated the protein expressions of TLR4, Myd88, and NF-κB in the intestine of HFD rats, indicating that GC could target the TLR4/Myd88/NF-κB pathway to interfere with glycolipid metabolism disorder. Correlation analysis revealed that GC could target the Akkermansia-TLR4/Myd88/NF-κB pathway axis which attenuates glycolipid metabolism disorder. Therefore, this study establishes the foundation for GC as a novel therapeutic agent for glycolipid metabolism disorder chemoprevention, and it introduces a novel methodology for harnessing the potential of natural botanical extracts in the prevention and treatment of metabolic syndrome.
期刊：
Postharvest Biology and Technology,2024年211:112815 ISSN：0925-5214
通讯作者：
Shenghua Ding
作者机构：
[Qi Quan] Longping Branch, College of Biology, Hunan University, Changsha 410125, China;Hunan Agricultural Product Processing Institute, Hunan Academy of Agricultural Sciences, Hunan Provincial Key Laboratory for Fruits and Vegetables storage, Processing and Quality Safety, Changsha 410125, China;[Rongrong Wang] College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China;[Yanqun Xu; Zisheng Luo] College of Biosystems Engineering and Food Science, Key Laboratory of Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Afairs, Zhejiang University, Hangzhou, China;[Haishan Xu; Xia Chang; Shuai Ge; Saiqing Xu; Yang Shan; Shenghua Ding] Longping Branch, College of Biology, Hunan University, Changsha 410125, China<&wdkj&>Hunan Agricultural Product Processing Institute, Hunan Academy of Agricultural Sciences, Hunan Provincial Key Laboratory for Fruits and Vegetables storage, Processing and Quality Safety, Changsha 410125, China
通讯机构：
[Shenghua Ding] L;Longping Branch, College of Biology, Hunan University, Changsha 410125, China<&wdkj&>Hunan Agricultural Product Processing Institute, Hunan Academy of Agricultural Sciences, Hunan Provincial Key Laboratory for Fruits and Vegetables storage, Processing and Quality Safety, Changsha 410125, China
摘要：
This study provided a new perspective on regulating strawberry flavor during storage by maintaining fungal community balance with active packaging film. Compared with initial strawberries (IS), gelatin composite film-packaged strawberries (CG) showed pleasant fruity and fragrance flavor whose relative content of most esters (ethyl acetate, butyl acetate, etc), 2-hexen-1-ol, hexanal D, and 3-pentanone increased, while other treated strawberries possessed alcoholic, sour, or moldy flavor. Furthermore, the relative abundance of fungal community (Mycosphaerella, Botrytis, Papiliotrema, Vishniacozyma, Filobasidium, etc) in CG was similar to that of IS. However, Botrytis was the dominant fungal genus in other treated strawberries and their fungal diversity decreased. Spearman correlation coefficient indicated that Papiliotrema, Vishniacozyma, and Filobasidium were highly correlated with flavor formation of strawberries (esters, alcohols, aldehydes, etc). Therefore, this work contributed to understanding the effect of fungal community on flavor formation of strawberry fruit during storage and also revealing the great potential of gelatin composite film on maintaining the quality of postharvest strawberries during storage.
摘要：
Yellow tea is a lightly fermented tea with unique sensory qualities and health benefits. However, chemical composition and sensory quality of yellow tea products have rarely been studied. 12 representative yellow teas, which were basically covered the main products of yellow tea, were chosen in this study. Combined analysis of non-targeted/targeted metabolomics and electronic sensor technologies (E-eye, E-nose, E-tongue) revealed the chemical and sensor variation. The results showed that yellow big tea differed greatly from yellow bud teas and yellow little teas, but yellow bud teas could not be effectively distinguished from yellow little teas based on chemical constituents and electronic sensory characteristics. Sensor variation of yellow teas might be attributed to some compounds related to bitterness and aftertaste-bitterness (4 '-dehydroxylated gallocatechin-3-O-gallate, dehydrotheasinensin C, myricitin 3-O-galactoside, phloroglucinol), aftertaste-astringency (methyl gallate, 1,5-digalloylglucose, 2,6-digalloylglucose), and sweetness (maltotriose). This study provided a comprehensive un-derstanding of yellow tea on chemical composition and sensory quality.
摘要：
Type 2 diabetes mellitus (T2DM) is a chronic and complex disease, and traditional drugs have many side effects. The active compound dihydromyricetin (DHM), derived from natural plants, has been shown in our previous study to possess the potential for reducing blood glucose levels; however, its precise molecular mechanism remains unclear. In the present study, network pharmacology and transcriptomics were performed to screen the molecular targets and signaling pathways of DHM disturbed associated with T2DM, and the results were partially verified by molecular docking, RT-PCR, and Western blotting at in vivo levels. Firstly, the effect of DHM on blood glucose, lipid profile, and liver oxidative stress in db/db mice was explored and the results showed that DHM could reduce blood glucose and improve oxidative stress in the liver. Secondly, GO analysis based on network pharmacology and transcriptomics results showed that DHM mainly played a significant role in anti-inflammatory, antioxidant, and fatty acid metabolism in biological processes, on lipoprotein and respiratory chain on cell components, and on redox-related enzyme activity, iron ion binding, and glutathione transferase on molecular functional processes. KEGG system analysis results showed that the PI3K-Akt signaling pathway, IL17 signaling pathway, HIF signaling pathway, MAPK signaling pathway, AGE-RAGE signaling pathway in diabetic complications, and TNF signaling pathway were typical signaling pathways disturbed by DHM in T2DM. Thirdly, molecular docking results showed that VEGFA, SRC, HIF1A, ESR1, KDR, MMP9, PPARG, and MAPK14 are key target genes, five genes of which were verified by RT-PCR in a dose-dependent manner. Finally, Western blotting results revealed that DHM effectively upregulated the expression of AKT protein and downregulated the expression of MEK protein in the liver of db/db mice. Therefore, our study found that DHM played a therapeutic effect partially by activation of the PI3K/AKT/MAPK signaling pathway. This study establishes the foundation for DHM as a novel therapeutic agent for T2DM. Additionally, it presents a fresh approach to utilizing natural plant extracts for chemoprevention and treatment of T2DM.
通讯机构：
[Shen, QW; Quan, W ] H;Henan Univ Anim Husb & Econ, Sch Food Sci & Bioengn, 6 Longzihu North Rd, Zhengzhou 450046, Peoples R China.;Hunan Agr Univ, Coll Food Sci & Technol, Changsha 410128, Peoples R China.
关键词：
western dietary patterns;behavioral health disorders;red meat;refined grain;depression
摘要：
Western dietary patterns (WDP) and typical food groups may play a major role in the risk of behavioral health disorders. Nevertheless, the relationships between WDP, common food categories, and mental health disorders lack consistency and remain incompletely understood in relation to potential mechanisms. Therefore, the objective of the present study was conducted to synthesize available evidence linking WDP and typical food groups to these outcomes. Web of Science, PubMed, EMBASE, and MEDLINE were searched up to August 2023. Random effect meta-analyses were performed to obtain pooled odds ratio and the relative risk for the prevalence of outcomes and the incidence of outcomes, respectively. A total of 54 articles were included. WDP was associated with increased risk of both depression (1.19; 95% CI: 1.06-1.32) and depressive symptoms (1.20; 95% CI: 1.08-1.34). Except for high-fat dairy products, food groups are associated with an increased risk of anxiety, depression, and depressive symptoms. This review presents evidence to further understand the relationship between WDP, typical food groups, and the incidence of behavioral health disorders, and more randomized controlled trials and cohort studies are urgently required to confirm these findings and elucidate potential mechanisms.
作者机构：
[Luo, Jie; Li, Zhixi; Geng, Lanlan; Fan, Ke] College of Food Science and Technology, Hunan Agricultural University, Changsha, 410114, China;[Liu, Tianshu; Wang, Pengjie; Ren, Fazheng] Key Laboratory of Functional Dairy, Co-constructed by Ministry of Education and Beijing Government, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China;[Luo, Jie] Key Laboratory of Functional Dairy, Co-constructed by Ministry of Education and Beijing Government, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China. Electronic address: luojie@hunau.edu.cn
通讯机构：
[Luo, Jie] K;Key Laboratory of Functional Dairy, Co-constructed by Ministry of Education and Beijing Government, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China. Electronic address:
摘要：
Microencapsulated enzymes have been found to effectively accelerate cheese ripening. However, microencapsulated enzyme release is difficult to control, often resulting in enzyme release during cheese processing, and causing texture and flavor defects. This study aims to address this issue by developing aminopeptidase-loaded pH-responsive chitosan microspheres (A-CMs) for precise enzyme release during cheese ripening. An aminopeptidase with an isoelectric point (pH 5.4) close to the pH value of cheese ripening was loaded on chitosan microspheres through electrostatic interaction. Turbidity titration measurements revealed that pH 6.5 was optimal for binding aminopeptidase and microspheres, affording the highest loading efficiency of 58.16%. Various characterization techniques, including scanning electron microscopy, energy dispersive spectroscopy, and fourier-transform infrared spectroscopy confirmed the successful loading of aminopeptidase molecules on the chitosan microspheres. In vitro release experiments conducted during simulated cheese production demonstrated that aminopeptidase release from A-CMs was pH-responsive. The microspheres retained the enzyme during the coagulation and cheddaring processes (pH 5.5-6.5), and only released it after entering the cheese ripening stage (pH 5.0-5.5). By loading aminopeptidase on chitosan microspheres, the loss rate of the enzyme in cheese whey was reduced by approximately 79%. Furthermore, compared with cheese without aminopeptidase and cheese with aminopeptidase added directly, the cheeses made with A-CMs exhibited the highest proteolysis level and received superior sensory ratings for taste and smell. The content of key aroma substances, such as 2/3-methylbutanal and ethyl butyrate in cheese with A-CMs was more than 15 times higher than the others. This study provides an approach for accelerating cheese ripening through the use of microencapsulated enzymes.
摘要：
Single-atom nanozymes (SAzymes) have been wildly used to design high-performance biosensors for the quantification of organophosphorus pesticides (OPs) recently. However, the low yield and low metal loading of SAzymes often limit their practical use in biosensing field. Herein, a large-scale synthesis (6.60 g) of Fe-N /C SAzymes (Fe loading of 3.9 wt%) was achieved by using carbon black as a template. This prepared Fe-N/C SAzymes exhibit efficient oxidase-like activity that could catalyze the oxidation reaction of 3,3 ',5,5 '-tetramethylbenzidine (TMB) along with color variation. On this basis of Fe-N/C SAzymes, a colorimetric biosensor was designed for OPs detection. Then a smartphone combined with RGB analysis was used to digitize the color information. The B/ (R + G) value shows good linear detection range (1-100 nM) and low detection limit (0.4177 nM). More importantly, the large-scale synthetic approach and excellent catalytic performance of Fe-N/C SAzymes are significant for promoting the marketability of biosensors.
摘要：
In this study, the effects of grafting chlorogenic acid (CA) on the antioxidant and probiotic activities of curdlan oligosaccharides (CDOS) were investigated. CDOS with degrees of polymerization of 3-6 was first obtained by degradation of curdlan with hydrogen peroxide and then grafted with CA using a free radical-mediated method under an ultrasonication-assisted Fenton system. The thermal stability and antioxidant ability of CDOS were enhanced after grafting with CA. In vitro fermentation, supplementation of CDOS-CA stimulated the proliferation of Prevotella and Faecalibacterium while inhibiting the growth of harmful microbiota. Notably, the concentration of total short-chain fatty acids and the relative abundance of beneficial bacteria markedly increased after fermentation of CDOS-CA, indicating that CA grafting could improve the probiotic activity of CDOS. Overall, the covalent binding of CDOS and CA could enhance the antioxidant and probiotic activities of CDOS, suggesting potential improvements in gastrointestinal and colonic health.
通讯作者：
Guowan Su<&wdkj&>Guowan Su Guowan Su Guowan Su
作者机构：
[Yang Liu; Yang Liu Yang Liu Yang Liu] College of Food Science and Technology, Hunan Agricultural University, Changsha, China;[Yanglin Hua; Yanglin Hua Yanglin Hua Yanglin Hua] College of Food Science and Engineering, Guangdong Ocean University, Yangjiang, China;School of Food Science and Engineering, South China University of Technology, Guangzhou, China;Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou, China;[Huaxing Sun; Liyu Liu; Shuguang Wang; Mouming Zhao; Guowan Su; Huaxing Sun Huaxing Sun Huaxing Sun; Liyu Liu Liyu Liu Liyu Liu; Shuguang Wang Shuguang Wang Shuguang Wang; Mouming Zhao Mouming Zhao Mouming Zhao; Guowan Su Guowan Su Guowan Su] School of Food Science and Engineering, South China University of Technology, Guangzhou, China<&wdkj&>Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou, China
通讯机构：
[Guowan Su; Guowan Su Guowan Su Guowan Su] S;School of Food Science and Engineering, South China University of Technology, Guangzhou, China<&wdkj&>Guangdong Food Green Processing and Nutrition Regulation Technologies Research Center, Guangzhou, China
摘要：
PY and GLGPGVG exhibited protective effects against UV‐induced damage in HFFs. Protective mechanisms of GLGPGVG involve stimulated SOD and inhibited MMP‐12. Part of GLGPGVG could pass through the Caco‐2 monolayer intactly. Abstract Studies have indicated the potential of oral elastin hydrolysates in repairing photoaging skin. To reveal the underlying mechanism, this study examined how two elastin‐derived peptides (Gly‐Leu‐Gly‐Pro‐Gly‐Val‐Gly [GLGPGVG] and Pro‐Tyr [PY]) repair ultraviolet (UV)‐induced damage in human foreskin fibroblasts (HFFs) and explored their digestive stability using UPLC‐MS/MS. Results showed that UV‐damaged HFFs treated with GLGPGVG showed higher superoxide dismutases (SOD) activity and cell viability compared with PY treatment. Furthermore, GLGPGVG even reversed UV‐induced increase in reactive oxygen species, MMP‐12 (elastase), elastin mRNA and intercellular Ca2+ levels, and decrease in elastin content. Intriguingly, in vitro digestion products from GLGPGVG retained approximately 60% of elastase inhibitory activity. Furthermore, a portion of GLGPGVG was observed to pass through the Caco‐2 monolayer intact. These findings revealed that elastin‐derived peptide GLGPGVG holds promise for passing through the gastrointestinal tract and exerting protective effects against photoaging through increasing SOD activity and inhibiting MMP‐12 expression.
