Storage stability of vitamin C fortified purple mashed potatoes processed with microwave-assisted thermal sterilization system

Abstract

Quality changes in ready-to-eat, shelf-stable foods, during storage can be influenced by many factors, such as processing, storage conditions, and the barrier properties of the packaging. This research investigated retention of vitamin C and anthocyanin in purple mashed potatoes as influenced by packaging barrier properties and encapsulation during storage after microwave assisted thermal sterilization. Purple mashed potatoes fortified with encapsulated (EVC) or non-encapsulated vitamin C (NVC) were packaged in two high-barrier polymer pouches (TLMO and PAA), processed with a pilot-scale microwave assisted thermal sterilization (MATS) system ( F ₀ = 10.7 min), and stored at 37.8 °C for 7 months. MATS processing caused a significant increase ( P < 0.05) in the oxygen transmission rates (OTRs) of PAA pouches but did not affect the barrier properties of TLMO pouches. PAA film also had a significantly higher ( P < 0.05) water vapor transmission rate (WVTRs) than TLMO films, which resulted in a significantly higher ( P < 0.05) weight loss in the samples packaged in PAA pouches than TLMO pouches. Purple mashed potatoes containing encapsulated vitamin C in both TLMO and PAA pouches showed the highest retention over 2 months of storage at 37.8 °C than non-encapsulated vitamin C. Additionally, purple mashed potatoes exposed to 700 lumens light showed a significantly higher ( P < 0.05) deterioration in the anthocyanin, total phenolic content, color, and vitamin C. Overall, MATS processed purple mashed potatoes in high barrier polymeric packaging can minimize the quality changes when stored in dark conditions during storage and have an extended shelf life.

Keywords

flexible packaging / shelf life / thermal processing / antioxidant / encapsulation

References

[1] Montero ML, Garrido D, Gallardo RK, Tang J, Ross CF. Consumer acceptance of a ready-to-eat meal during storage as evaluated with a home-use test Foods. 2021, 10, 1623

[2] Romaniw OC, Montero ML, Sharma M, Ross CF, Duizer LM. Creating foods for older adults: emotional responses and liking of microwave-assisted thermal sterilization processed meals Journal of Food Science. 2022, 87, 3173-89

[3] Zhang H, Patel J, Bhunia K, Al-Ghamdi S, Sonar CR, et al. Color, vitamin C, β-carotene and sensory quality retention in microwave-assisted thermally sterilized sweet potato puree: effects of polymeric package gas barrier during storage Food Packaging and Shelf Life. 2019, 21, 100324

[4] Tang J. Unlocking potentials of microwaves for food safety and quality Journal of Food Science. 2015, 80, e1776-E1793

[5] Patel J, Al-Ghamdi S, Zhang H, Queiroz R, Tang J, et al. Determining shelf life of ready-to-eat macaroni and cheese in high barrier and oxygen scavenger packaging sterilized via microwave-assisted thermal sterilization Food and Bioprocess Technology. 2019, 12, 1516-26

[6] Palmer K, Parhi A, Shetty A, Sunkesula V, Sharma P. Development of methodology for assessing flowability of milk protein powders using shear failure testing device Journal of Food Engineering. 2023, 348, 111450

[7] Singh AK, Parhi A, Panda BP, Mohanty S, Nayak SK, et al. Aligned multi-walled carbon nanotubes (MWCNT) and vapor grown carbon fibers (VGCF) reinforced epoxy adhesive for thermal conductivity applications Journal of Materials Science: Materials in Electronics. 2017, 28, 17655-74

[8] Patel J, Parhi A, Al-Ghamdi S, Sonar CR, Mattinson DS, et al. Stability of vitamin C, color, and garlic aroma of garlic mashed potatoes in polymer packages processed with microwave-assisted thermal sterilization technology Journal of Food Science. 2020, 85 9 2843-51

[9] Kak A, Parhi A, Rasco BA, Tang J, Sablani SS. Improving the oxygen barrier of microcapsules using cellulose nanofibres International Journal of Food Science & Technology. 2021, 56, 4258-67

[10] Kumar PK, Parhi A, Sablani SS. Development of high-fiber and sugar-free frozen pancakes: influence of state and phase transitions on the instrumental textural quality of pancakes during storage LWT. 2021, 146, 111454

[11] Parhi A, Bhunia K, Rasco B, Tang J, Sablani SS. Development of an oxygen sensitive model gel system to detect defects in metal oxide coated multilayer polymeric films Journal of Food Science. 2019, 84, 2507-19

[12] Parhi A, Tang J, Sablani SS. Functionality of ultra-high barrier metal oxide-coated polymer films for in-package, thermally sterilized food products Food Packaging and Shelf Life. 2020, 25, 100514

[13] Parhi A, Zhang C, Sonar CR, Sankaran S, Rasco B, et al. Finding a carbohydrate gel-based oxygen indicator for expedited detection of defects in metal-oxide coated food packaging Food Packaging and Shelf Life. 2022, 34, 100973

[15] Sonar CR, Parhi A, Liu F, Patel J, Rasco B, et al. Investigating thermal and storage stability of vitamins in pasteurized mashed potatoes packed in barrier packaging films Food Packaging and Shelf Life. 2020, 24, 100486

[18] Haile DM, de Smet S, Claeys E, Vossen E. Effect of light, packaging condition and dark storage durations on colour and lipid oxidative stability of cooked ham Journal of Food Science and Technology. 2013, 50, 239-47

[19] Reshmi SK, Aravindhan KM, Devi PS. The effect of light, temperature, pH on stability of betacyanin pigments in Basella alba fruit Asian Journal of Pharmaceutical and Clinical Research. 2012, 5 4 107-10

[20] Brown CR. Antioxidants in potato American Journal of Potato Research. 2005, 82, 163-72

[21] Patel J, Sonar CR, Al-Ghamdi S, Tang Z, Yang T, et al. Influence of ultra-high barrier packaging on the shelf-life of microwave-assisted thermally sterilized chicken pasta LWT. 2021, 136, 110287

[22] Zhang H, Tang Z, Rasco B, Tang J, Sablani SS. Shelf-life modeling of microwave-assisted thermal sterilized mashed potato in polymeric pouches of different gas barrier properties Journal of Food Engineering. 2016, 183, 65-73

[23] Inanoglu S, Barbosa-Cánovas GV, Patel J, Zhu M, Sablani SS, et al. Impact of high-pressure and microwave-assisted thermal pasteurization on inactivation of Listeria innocua and quality attributes of green beans Journal of Food Engineering. 2021, 288, 110162

[24] Burgos G, Amoros W, Muñoa L, Sosa P, Cayhualla E, et al. Total phenolic, total anthocyanin and phenolic acid concentrations and antioxidant activity of purple-fleshed potatoes as affected by boiling Journal of Food Composition and Analysis. 2013, 30, 6-12

[25] Cevallos-Casals BA, Cisneros-Zevallos L. Stoichiometric and kinetic studies of phenolic antioxidants from Andean purple corn and red-fleshed sweetpotato Journal of Agricultural and Food Chemistry. 2003, 51, 3313-9

[26] Al-Ghamdi S, Parhi A, Sonar CR, Dolgovskij MK, Rasco B, et al. Designing thinner wall ethylene-vinyl alcohol copolymer and polypropylene-based semi-rigid trays for microwave-assisted thermal sterilization and pasteurization processes Food Packaging and Shelf Life. 2020, 26, 100566

[27] Byun Y, Hong SI, Mangalassary S, Bae HJ, Cooksey K, et al. The performance of organic and inorganic coated retort pouch materials on the shelf life of ready-to-eat rice products LWT - Food Science and Technology. 2010, 43, 862-6

[28] Henry BM, Erlat AG, McGuigan A, Grovenor CRM, Briggs GAD, et al. Characterization of transparent aluminium oxide and indium tin oxide layers on polymer substrates Thin Solid Films. 2001, 382, 194-201

[29] Zhang H, Bhunia K, Munoz N, Li L, Dolgovskij M, et al. Linking morphology changes to barrier properties of polymeric packaging for microwave-assisted thermal sterilized food Journal of Applied Polymer Science. 2017, 134, 45481

[30] Struller CF, Kelly PJ, Copeland NJ. Aluminum oxide barrier coatings on polymer films for food packaging applications Surface and Coatings Technology. 2014, 241, 130-37

[31] Steed LE, Truong VD. Anthocyanin content, antioxidant activity, and selected physical properties of flowable purple-fleshed sweetpotato purees Journal of Food Science. 2008, 73, S215-S221

[32] Zhang H, Bhunia K, Kuang P, Tang J, Rasco B, et al. Effects of oxygen and water vapor transmission rates of polymeric pouches on oxidative changes of microwave-sterilized mashed potato Food and Bioprocess Technology. 2016, 9, 341-51

[33] Bekbölet M. Light effects on food Journal of Food Protection. 1990, 53, 430-40

[34] Manzocco L, Kravina G, Calligaris S, Nicoli MC. Shelf life modeling of photosensitive food: the case of colored beverages Journal of Agricultural and Food Chemistry. 2008, 56, 5158-64

[35] Fang Z, Wu D, Yü D, Ye X, Liu D, et al. Phenolic compounds in Chinese purple yam and changes during vacuum frying Food Chemistry. 2011, 128, 943-48

[36] Thangaraj S, Seethalakshmi M. Application of microencapsulation technology for the production of vitamin-C fortified flavoured milk Advances in Dairy Research. 2015, 3, 1-10

[37] Aurand LW, Singleton JA, Noble BW. Photooxidation reactions in milk Journal of Dairy Science. 1966, 49, 138-43

[38] Barra PA, Márquez K, Gil-Castell O, Mujica J, Ribes-Greus A, et al. Spray-drying performance and thermal stability of L-ascorbic acid microencapsulated with sodium alginate and gum Arabic Molecules. 2019, 24, e2872

Funding for this study was provided by USDA National Institute of Food and Agriculture Research grants 2016-67017‐24597, 2016-68003-24840 and Hatch project #1016366. The authors would like to convey their appreciation and gratitude to the polymer companies for supplying the film pouches.

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2023 Editorial Office of Food Innovation and Advances