Changes of total polyphenolics and vitamin C acerola during storage and spray drying process

Results of this research showed that there was significant difference in vitamin C and total polyphenolic concentration and three popular varieties of acerola fruits from Tien Giang province. Concentrations of both vitamin C and polyphenolics reduced rapidly during storage at room temperature.
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Changes of total polyphenolics and vitamin C acerola during storage and spray drying processNong Lam University, Ho Chi Minh City 69 Changes of total polyphenolics and vitamin C in acerola during storage and spray drying process Thien T. Le1∗ , Quang H. Luong1 , Cabaltica D. Angeli2 , Tuan Q. Le3 , & Katleen Raes4 1 Department of Food Engineering, Nong Lam University, Ho Chi Minh City, Vietnam 2 Department of Civil Engineering, International University, Ho Chi Minh City, Vietnam 3 Department of Food Science and Technology, Kasetsart University, Bangkok, Thailand 4 Department of Industrial Biological Sciences, Ghent University, Kortrijk, BelgiumARTICLE INFO ABSTRACTResearch paper Acerola fruit is known to have a high vitamin C concentration. Polyphenolics are also natural oxidants occurring in plants. Under-Received: May 03, 2018 standing changes of these components during storage conditionsRevised: May 18, 2018 and processing steps become important. Results of this researchAccepted: May 23, 2018 showed that there was significant difference in vitamin C and total polyphenolic concentration and three popular varieties of acerolaKeywords fruits from Tien Giang province. Concentrations of both vitamin C and polyphenolics reduced rapidly during storage at room tem-Acerola perature. After three days, vitamin C reduced about 40% whereas total polyphenolics reduced about 70%. The losses at refrigeratedVitamin C temperature after 3 days were less than 15% and less than 30%,Polyphenolics for vitamin C and total polyphenolics, respectively. Frozen storageSpray drying of the fruit maintained quite well vitamin C and polyphenolics.Storage Acerola pomace juice was concentrated before spray drying and, at the same vacuum pressure, temperatures influenced significantly the retention of vitamin C and total polyphenolics. Optimization∗ Corresponding author of spray drying conditioners including inlet hot air temperatures and added ratio of maltodextrin (drying carrier) was also carriedLe Trung Thien out to obtain high recovery of dry matter, total polyphenolics andEmail: le.trungthien@hcmuaf.edu.vn vitamin C.Cited as: Le, T. T., Luong, Q. H., Angeli, C. D., Le, T. Q., & Raes, K. (2018). Changes of totalpolyphenolics and vitamin C in acerola during storage and spray drying process. The Journal ofAgriculture and Development 17(3), 69-76.1. Introduction guava. Concentration of vitamin C in compressed juice of acerola juice is higher than that in com- Acerola is known as an excellent source of vi- pressed juice of oranges, lemons, grapes,... There-tamin C (Mezadri et al., 2008). Estimatedly, a fore, acerola fruit could be used as a commercialcup (180 ml) of acerola compressed juice, con- source of vitamin C for daily diet or a supple-taining potentially 35 mg/mL ascorbic acid, is ment to other foods. As well, acerola juice can beequivalent to the amount of vitamin C of 14 L or- added to other fruit juices to increase the vitaminange compressed juice (Johnson, 2003). Accord- C content.ing to Decarvalho & Manica (1994), the concen- Polyphenols are of secondary metabolitestration of vitamin C in acerola fruit was about 5 widely found in the plant kingdom. These com-– 20 times higher compared to guava, about 10 pounds have received great attention nowadays– 15 times compared to mango. Especially, vita- mainly due to their antioxidant potential and themin C occurs mainly in the pulp of acerola while relation between their consumption and the pre-it occurs at higher concentration in the peel of vention of some diseases associated with oxidativewww.jad.hcmuaf.edu.vn The Journal of Agriculture and Development 17(3)70 Nong Lam University, Ho Chi Minh Citystress, including cancer, and others such as car- components. Therefore, addition of carrier is nec-diovascular diseases and osteoporosis. Polyphe- essary and more experiments should be done tonols found in acerola (Malpighia emarginata find out suitable added co ...