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Zhang Y, Han G, Wang X, Wang Y, Wang M, Li Y, Yu Q, Han L. Effect of tremella polysaccharides on the quality of collagen jelly: insight into the improvement of the gel properties and the antioxidant activity of yak skin gelatin. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:6809-6820. [PMID: 38572795 DOI: 10.1002/jsfa.13510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/12/2024] [Accepted: 04/02/2024] [Indexed: 04/05/2024]
Abstract
BACKGROUND The present study aimed to investigate the effects of tremella polysaccharides on the gel properties and antioxidant activity of yak skin gelatin with a view to improving the quality of collagen jellies. The preparation of composite gels were performed by yak skin gelatin (66.7 mg mL-1) and tremella polysaccharides with different concentrations (0, 2, 4, 6, 8 mg mL-1), and finally the collagen jelly was prepared by composite gel (yak skin gelatin: 66.7 mg mL-1; tremella polysaccharides:6 mg mL-1) with the best performance. RESULTS Tremella polysaccharides not only improved the hardness, springiness, gel strength, water holding capacity and melting temperature of yak skin gelatin, but also enhanced the composite gel's scavenging activity against ABTS radicals, DPPH radicals, O2 and OH radicals. The filling of tremella polysaccharides into the gelatin network increased the number of crosslinking sites inside the gel, which resulted in the gel network structure becoming dense and orderly. The gel particles became finer and more uniform, and the thermal stability was improved. Furthermore, the sensory score of commercially available gelatin jelly decreased more rapidly during storage compared to the composite gel jelly. CONCLUSION The gel properties and antioxidant activity of yak skin gelatin were improved by adding tremella polysaccharides, and then the quality and storage properties of the jelly were improved, which also provided technical reference for the development of functional gel food. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Yueyue Zhang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
| | | | - Xinyue Wang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
| | - Yanru Wang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
| | - Min Wang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
| | - Ying Li
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
| | - Qunli Yu
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
| | - Ling Han
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
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Thies AJ, Altmann BA, Countryman AM, Smith C, Nair MN. Consumer willingness to pay (WTP) for beef based on color and price discounts. Meat Sci 2024; 217:109597. [PMID: 39024701 DOI: 10.1016/j.meatsci.2024.109597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 06/16/2024] [Accepted: 07/11/2024] [Indexed: 07/20/2024]
Abstract
Discoloration of beef products leads retailers to offer discounts or discard beef products, as consumers tend to reject a brownish beef color. This practice contributes to retail food waste and inefficient resource allocation linked to beef production. The objective of this study was to investigate U.S. consumer preferences for beef color and price discounts. After an initial test for screen acuity regarding color perception using a condensed form the ishihara test, data on meat purchasing behavior as well as demographic information was collected for all participants. An additional part of the study undertook a hypothetical discrete choice experiment using digital photos of beef steaks with different meat color, price, and discount labels in retail packaging to examine consumer preferences, willingness to pay, and the effects of discount pricing. Results of a Mixed Logit Model based on choice data show that beef shoppers perceive, see, and prefer color nearly linearly across days of retail display. Consumers' willingness to pay was negative for 4, 7 and 9 days of retail display relative to day zero and decreased with an increase in discoloration. Results indicate that beef shoppers would have to be financially compensated for choosing a steak that was discolored after 9 days of retail display. However, male beef buyers exhibit weaker preferences for color and could be a target segment for promoting discolored beef products to reduce meat waste.
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Affiliation(s)
- Annika J Thies
- Johann Heinrich von Thuenen Institute, Institute of Market Analysis, Braunschweig, Germany; Department of Animal Sciences, Colorado State University, Fort Collins, CO, USA.
| | - Brianne A Altmann
- Faculty of Organic Agricultural Sciences, University Kassel, Kassel, Germany.
| | - Amanda M Countryman
- Department of Agricultural and Resource Economics, Colorado State University, CO, USA.
| | - Colton Smith
- Department of Animal Sciences, Colorado State University, Fort Collins, CO, USA.
| | - Mahesh N Nair
- Department of Animal Sciences, Colorado State University, Fort Collins, CO, USA.
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3
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Zeng XB, Yin FW, Zhao GH, Guo C, Li DY, Liu HL, Qin L, Shahidi F, Zhou DY. Mechanism of color change in Antarctic krill oil during storage. Food Chem 2024; 444:138583. [PMID: 38309082 DOI: 10.1016/j.foodchem.2024.138583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 01/10/2024] [Accepted: 01/24/2024] [Indexed: 02/05/2024]
Abstract
Antarctic krill oil (AKO) is reddish-orange in color but undergoes changes during storage. To investigate the color deterioration and potential mechanisms involved, the changes in color, endogenous components (astaxanthin, fatty acids, and phospholipids), and reaction products (aldehydes, α-dicarbonyl compounds, and pyrroles) of AKO upon storage were determined. Although the visual color of AKO tended to darken upon storage, the colorimetric analysis and ultraviolet-visible spectrum analysis both indicated a fading in red and yellow due to the oxidative degradation of astaxanthin. During storage of AKO, lipid oxidation led to the formation of carbonyl compounds such as aldehydes and α-dicarbonyls. In addition, phosphatidylethanolamines (PEs) exhibited a faster loss rate than phosphatidylcholines. Moreover, hydrophobic pyrroles, the Maillard-like reaction products associated with primary amine groups in PEs accumulated. Therefore, it is suggested that the Maillard-like reaction between PEs and carbonyl compounds formed by lipid oxidation contributed to color darkening of AKO during storage.
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Affiliation(s)
- Xiang-Bo Zeng
- State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - Fa-Wen Yin
- State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - Guan-Hua Zhao
- State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - Chao Guo
- State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - De-Yang Li
- State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - Hui-Lin Liu
- State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - Lei Qin
- State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China
| | - Fereidoon Shahidi
- Department of Biochemistry, Memorial University of Newfoundland, St. John's, NL A1C 5S7, Canada
| | - Da-Yong Zhou
- State Key Laboratory of Marine Food Processing & Safety Control, National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, PR China.
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4
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Kasper C. Animal board invited review: Heritability of nitrogen use efficiency in fattening pigs: Current state and possible directions. Animal 2024; 18:101225. [PMID: 39013333 DOI: 10.1016/j.animal.2024.101225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 06/17/2024] [Accepted: 06/17/2024] [Indexed: 07/18/2024] Open
Abstract
Pork, an important component of human nutrition worldwide, contributes considerably to anthropogenic nitrogen and greenhouse gas emissions. Reducing the environmental impact of pig production is therefore essential. This can be achieved through system-level strategies, such as optimising resource use, improving manure management and recycling leftovers from human food production, and at the individual animal level by maintaining pig health and fine-tuning dietary protein levels to individual requirements. Breeding, coupled with nutritional strategies, offers a lasting solution to improve nitrogen use efficiency (NUE) - the ratio of nitrogen retained in the body to nitrogen ingested. With a heritability as high as 0.54, incorporating NUE into breeding programmes appears promising. Nitrogen use efficiency involves multiple tissues and metabolic processes, and is influenced by the environment and individual animal characteristics, including its genetic background. Heritable genetic variation in NUE may therefore occur in many different processes, including the central nervous regulation of feed intake, the endocrine system, the gastrointestinal tract where digestion and absorption take place, and the composition of the gut microbiome. An animal's postabsorptive protein metabolism might also harbour important genetic variation, especially in the maintenance requirements of tissues and organs. Precise phenotyping, although challenging and costly, is essential for successful breeding. Various measurement techniques, such as imaging techniques and mechanistic models, are being explored for their potential in genetic analysis. Despite the difficulties in phenotyping, some studies have estimated the heritability and genetic correlations of NUE. These studies suggest that direct selection for NUE is more effective than indirect methods through feed efficiency. The complexity of NUE indicates a polygenic trait architecture, which has been confirmed by genome-wide association studies that have been unable to identify significant quantitative trait loci. Building sufficiently large reference populations to train genomic prediction models is an important next step. However, this will require the development of truly high-throughput phenotyping methods. In conclusion, breeding pigs with higher NUE is both feasible and necessary but will require increased efforts in high-throughput phenotyping and improved genome annotation.
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Affiliation(s)
- C Kasper
- Animal GenoPhenomics, Agroscope, Posieux, Switzerland.
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Siddiqui SA, Bhowmik S, Afreen M, Ucak İ, Ikram A, Gerini F, Mehdizadeh M, Ayivi RD, Castro-Muñoz R. Bodybuilders and high-level meat consumers' behavior towards rabbit, beef, chicken, turkey, and lamb meat: A comparative review. Nutrition 2024; 119:112305. [PMID: 38199031 DOI: 10.1016/j.nut.2023.112305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 10/31/2023] [Accepted: 11/19/2023] [Indexed: 01/12/2024]
Abstract
In bodybuilders' diets, protein plays a crucial role in supporting muscle growth and repairing damaged muscle tissue. These individuals meet their protein needs by combining dietary sources with supplements. Animal-based proteins are often preferred over plant-based proteins because they are believed to better support muscle protein synthesis. This review explores the meat consumption patterns of bodybuilders and high-level meat consumers, focusing on rabbit, beef, chicken, turkey, and lamb. We describe and compare the types of meat bodybuilders commonly consume and provide an overview of protein supplements, including meat-based options, plant-based alternatives, and whey-based products. Our aim is to gain insight into the dietary preferences of bodybuilders and high-level meat consumers, considering their nutritional requirements and the potential effect on the meat industry. We conducted an extensive search across various databases, including Scopus, Web of Science, PubMed, and Google Scholar. We found that individual choices vary based on factors such as attitudes, trust, taste, texture, nutritional content, ethical considerations, and cultural influences. Nutritional factors, including protein content, amino acid profiles, and fat levels, significantly influence the preferences of bodybuilders and high-level meat consumers. However, it is crucial to maintain a balance by incorporating other essential nutrients such as carbohydrates, healthy fats, vitamins, and minerals to ensure a complete and balanced diet. The findings from this review can inform strategies and product development initiatives tailored to the needs of bodybuilders and discerning meat enthusiasts.
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Affiliation(s)
- Shahida Anusha Siddiqui
- Technical University of Munich, Department of Biotechnology and Sustainability, Straubing, Germany; German Institute of Food Technologies (DIL e.V.), Quakenbrück, Germany
| | - Shuva Bhowmik
- Centre for Bioengineering and Nanomedicine, Faculty of Dentistry, Division of Health Sciences, University of Otago, Dunedin, New Zealand; Department of Food Science, University of Otago, Dunedin, New Zealand; Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali, Bangladesh
| | - Maliha Afreen
- Niğde Ömer Halisdemir University, Faculty of Agricultural Sciences and Technologies, Animal Production and Technologies Department, Niğde, Turkey
| | - İlknur Ucak
- Niğde Ömer Halisdemir University, Faculty of Agricultural Sciences and Technologies, Animal Production and Technologies Department, Niğde, Turkey
| | - Ali Ikram
- University Institute of Food Science and Technology, The University of Lahore, Lahore, Pakistan
| | - Francesca Gerini
- Department of Agriculture, Food, Environment and Forestry, University of Florence, Firenze, Italy
| | - Mohammad Mehdizadeh
- Department of Agronomy and Plant Breeding, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Raphael D Ayivi
- Department of Food and Nutritional Sciences, North Carolina A&T State University, Greensboro, North Carolina, USA; Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina, Greensboro, North Carolina, USA
| | - Roberto Castro-Muñoz
- Gdansk University of Technology, Faculty of Civil and Environmental Engineering, Department of Sanitary Engineering, 80 - 233, Gdansk, G. Narutowicza St. 11/12, Poland.
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Albert F, Kovács-Weber M, Bodnár Á, Pajor F, Egerszegi I. Seasonal Effects on the Performance of Finishing Pigs' Carcass and Meat Quality in Indoor Environments. Animals (Basel) 2024; 14:259. [PMID: 38254428 PMCID: PMC10812434 DOI: 10.3390/ani14020259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 01/24/2024] Open
Abstract
Most retailers in EU countries pay pig breeders for their animals' lean meat percentage, which does not align fully with measures of pork quality (such as colour). In this study, we investigated the effects of season (summer vs. autumn) on finishing pigs' performance, carcass characteristics, and meat quality parameters in 24 slaughter pigs. Growing performance traits (live weights, average daily weight gain), slaughter values (warm and cold carcass weights, trunk length, fat thickness) and meat quality parameters (pH at 45 min and 24 h postmortem, colour, drip loss, thawing loss, cooking loss, shear force, and meat composition) were recorded. Seasonal differences were more pronounced for the initial age, the number of days in the growing-finishing phase, and the average daily gain. There was also a significant difference in the trunk length between groups, the fat thickness on withers and loin, and also in mean fat thickness. A significant difference was found in the case of pH, total drip loss, and meat colour (L*). The intramuscular fat and collagen content of meat was significantly higher in summer; in contrast, the protein content of meat samples was considerably lower in summer. In conclusion, seasonal effects on finishers' performance, lean meat values, and several meat quality parameters highlight the importance of more profound seasonal settings of climate control to fulfil the progressively changing quantitative and qualitative requests of pork sector participants from farm to fork.
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Affiliation(s)
| | | | | | - Ferenc Pajor
- Department of Animal Husbandry Technology and Animal Welfare, Institute of Animal Sciences, Hungarian University of Agriculture and Life Sciences, Páter Károly 1, 2100 Gödöllő, Hungary; (F.A.); (M.K.-W.); (Á.B.); (I.E.)
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Qaid MM, Al-Mufarrej SI, Al-Garadi MA, Al-Haidary AA. Effects of Rumex nervosus leaf powder supplementation on carcasses compositions, small intestine dimensions, breasts color quality, economic feasibility in broiler chickens. Poult Sci 2023; 102:102943. [PMID: 37523995 PMCID: PMC10403739 DOI: 10.1016/j.psj.2023.102943] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/02/2023] [Accepted: 07/15/2023] [Indexed: 08/02/2023] Open
Abstract
Carcass characteristics, product quality, and the conversion of feed into meat with higher performance and feasibility are important determinants of the profitability and sustainability of any poultry enterprise. The objective of this study was to investigate the potential effect of Rumex nervosus leaf powder (RNLP) on carcass composition, small intestine dimensions, breast color quality, and economic feasibility of Ross broiler chickens. A total of 122 broilers were randomly distributed evenly among 4 treatments (0, 1, 3, and 5 g RNLP/ kg diet, n = 5 replicates per treatment, with 6 broilers per replicate: 3 ♀ and 3 ♂). Performance and economic data were collected in each replicate during the experiment. One male bird from each replication was examined for other criteria on d 34. Results showed that broilers fed 3 g of RNLP had a higher eviscerated carcass weight and dressing percentage (P < 0.05) than the control. The RNLP-fed broilers had higher weights and thicknesses in the duodenum and jejunum of up to 5 g and in the ileum and overall small intestine of up to 3 g. Broilers fed the lowest levels of RNLP had the highest revenue and net gain and the lowest cost-benefit ratio compared with those fed the highest levels of RNLP. The results indicate that the addition of RNLP has a positive effect on carcass processing, the intestinal measurements, and profitability ratios of the broilers. The 1 g RNLP/kg feed is the recommended dose to increase productivity and economic profitability ratios per kilogram of meat.
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Affiliation(s)
- Mohammed M Qaid
- Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Saud I Al-Mufarrej
- Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Maged A Al-Garadi
- Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Ahmed A Al-Haidary
- Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
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Webb MJ, Block JJ, Jaeger JR, Funston RN, Gonda MG, Underwood KR, Grubbs JK, Olson KC, Blair AD. Beef color and tenderness response to production systems utilizing additive combinations of growth-promotant technologies. Transl Anim Sci 2023; 7:txad092. [PMID: 37583488 PMCID: PMC10424714 DOI: 10.1093/tas/txad092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 07/28/2023] [Indexed: 08/17/2023] Open
Abstract
The objective of this study was to compare the influence of beef production systems using additive combinations of growth-promotant technologies on meat quality. Steer calves (n = 120) were assigned to 1 of 4 treatments: 1) no technology (NT; control), 2) antibiotic treated (ANT; NT plus therapeutic antibiotics, monensin, and tylosin), 3) implant treated (IMP; ANT plus a series of three implants), and 4) beta-agonist treated (BA; IMP plus ractopamine-HCl). Muscle biopsy samples from the longissimus lumborum were extracted from a subset (n = 4 per treatment) of steers to evaluate expression of calpain-1, calpain-2, and calpastatin using real-time RT-PCR. Following carcass chilling, objective color (L*, a*, and b*) was evaluated. The right strip loin was removed from each carcass, portioned into 2.54-cm steaks, and designated to 7, 14, or 21 d postmortem aging periods for analysis of cook loss and Warner-Bratzler shear force (WBSF). The anterior face of each strip loin was used for analysis of crude fat and moisture. Treatment influenced (P < 0.001) L*, a*, and b*. The NT and IMP treatments had greater (P < 0.01) L* values, ANT was intermediate, and BA had the lowest (P < 0.01) L* values. The NT and IMP treatments had higher (P < 0.01) a* and b* values compared with ANT, which were higher (P < 0.01) than BA. Steaks from implanted steers (IMP and BA) tended (P ≤ 0.067) to exhibit higher a* and b* than steaks from nonimplanted steers. Cattle in the NT and ANT treatments produced steaks with increased (P < 0.01) crude fat percentage compared with the IMP and BA treatments, which were similar (P > 0.05). Percent moisture of NT steaks was lower (P < 0.01) than all other treatments, ANT was intermediate, and IMP and BA were similar (P > 0.05) and had the highest (P < 0.01) moisture content. Cook loss tended to be greater (P = 0.088) for implanted steers (IMP and BA) compared to nonimplanted steers (NT and ANT). Steaks from NT and ANT treatments were more tender (P < 0.05) than IMP and BA, which were similar (P > 0.05). Thus, WBSF was lower (P < 0.001) in nonimplanted than implanted steaks. Expression of calpastatin was increased (P ≤ 0.025) in ANT and BA treatments, and there was a tendency for expression of calpain-2 to be increased (P = 0.081) in ANT compared to NT. These results suggest that production systems with limited use of growth promoting technology produced strip loins with more crude fat, less moisture and cook loss, and improved tenderness.
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Affiliation(s)
- Megan J Webb
- Department of Animal Science, South Dakota State University, Brookings, SD 57007, USA
- Eastern West Virginia Community and Technical College, Moorefield, WV 26836, USA
| | - Janna J Block
- Department of Animal Science, South Dakota State University, Brookings, SD 57007, USA
| | - John R Jaeger
- Western Kansas Agricultural Research Center-Hays, Kansas State University, Hays, KS 67601, USA
| | - Rick N Funston
- West Central Research and Extension Center, University of Nebraska-Lincoln, North Platte, NE 69101, USA
| | - Michael G Gonda
- Department of Animal Science, South Dakota State University, Brookings, SD 57007, USA
| | - Keith R Underwood
- Department of Animal Science, South Dakota State University, Brookings, SD 57007, USA
| | - Judson K Grubbs
- Department of Animal Science, South Dakota State University, Brookings, SD 57007, USA
| | - Kenneth C Olson
- Department of Animal Science, South Dakota State University, Brookings, SD 57007, USA
| | - Amanda D Blair
- Department of Animal Science, South Dakota State University, Brookings, SD 57007, USA
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