PL EN
THE IMPACT OF DIFFERENT DRYING METHODS ON QUALITY OF RADISH SPROUTS
 
More details
Hide details
1
WULS-SGGW, Faculty of Food Sciences
 
2
University of Valencia, Faculty of Pharmacy, Nutrition and Food Science Area
 
3
Sorbonne Universities, University of Technology of Compiègne, Integrated Transformations of Renewable Matter Laboratory
 
4
Shiraz University of Medical Sciences, Division of Food and Nutrition, Burn and Wound Healing Research Center
 
 
Publication date: 2021-07-01
 
 
2019;(597):41-51
 
KEYWORDS
ABSTRACT
In the latest years people’s attention focus on the consumption of products characterised by abundance in bioactive compounds. One of the products rich in the bioactive compounds is radish sprouts, which are generally consumed raw or slightly cooked. However, in recent years the problems connected with foodborne illness in sprouts were noticed. One of the possibilities to resist this problem is to use drying as the traditional method used for food preservation. Moreover, the set up right parameters of the process and methods of drying might influence on the sensory quality of plant products. During drying the water decrease because of evaporation and water activity reduce and inhibition of microbial activity occurs. Furthermore, the enzymatic and chemical reactions rate reduce what has influenced the quality of the food matrix. Thus, the aim of presented work was to assess the nutritional and quality losses such as DPPH scavenging activity, total phenolic compounds content, colour and rehydration properties, of the dried radish sprouts obtained by different drying techniques (convective drying – CD, microwave-assisted convective drying – MV-CD and infrared-assisted convective drying – IR-CD). In the case of convect- ive drying, process was carried out with the air velocity of 1 m·s –1 and at the temperature of 60°C. In infrared-assisted convective drying was used the power of infrared emitter equal 7.875 kW·m –2 , and air velocity equal to 1 m·s –1 . For microwave-assisted convective drying the starting microwave power was equal to 200 W, the air velocity was 1 m·s –1 in the temperature of 30°C. The DPPH scavenging activity and total phenolic compounds content were measured using spectrophotometric methods. The colour was measured in CIE L*a*b* system and rehydration properties were express as the soluble solids loss ratio and relative water content. After the drying process, the loss of total phenolic content and antioxidant capacity were observed. However, the methods of drying not differentiate the antioxidant capacity and the total phenolic content was significantly higher when infrared-assisted convective drying was applied. The colour after drying was altered and differences between the dried samples were noticed. Moreover, the analysis of rehydration properties shows that the fastest kinetics of water absorption was characteristic for infrared assisted convective dried sprouts. On the research basis, it can be indicated that analysed drying methods allow shaping the final quality of dried radish sprouts allowing to manufacture of products characterised by certain properties.
 
REFERENCES (18)
1.
Barba F.J., Parniakov O., Pereira S.A., Wiktor A., Grimi N., Boussetta N., Saraiva J.A., Raso J., Martin-Belloso O., Witrowa-Rajchert D., Vorobiev E., 2015. Current applications and new opportunities for the use of pulsed electric fields in food science and industry. Food Res. Int. 77(4), 773–798.
 
2.
Dev S.R.S., Geetha P., Orsat V., Gariépy Y., Raghavan G.S.V., 2011. Effects of microwave-assisted hot air drying and conventional hot air drying on the drying kinetics, color, rehydration, and volatiles of Moringa oleifera. Dry. Technol. 29(12), 1452–1458.
 
3.
Fijalkowska A., Nowacka M., Wiktor A., Sledz M., Witrowa-Rajchert D., 2016. Ultrasound as a pretreatment method to improve drying kinetics and sensory properties of dried apple. J. Food Process Eng. 39(3), 256–265.
 
4.
Fijałkowska A., Nowacka M., Witrowa-Rajchert D., 2015. Wpływ obróbki wstępnej ultradźwiękami na przebieg suszenia oraz barwę i zawartość betalain w buraku ćwikłowym [The influence of ultrasound pre-treatment on drying kinetics and the colour and betalains content in beetroot]. ZPPNR 581, 11–20.
 
5.
Frank C., Werber D., Cramer J.P., Askar M., Faber M., an der Heiden M., Bernard H., Fruth A., Prager R., Spode A., Wadl M., Zoufaly A., Jordan S., Kemper M.J., Follin P., Müller L., King L.A., Rosner B., Buchholz U., Stark K., Krause G., HUS Investigation Team, 2011. Epidemic profile of Shiga-toxin-producing Escherichia coli O104:H4 outbreak in Germany. N. Engl. J. Med. 365(19), 1771–1780.
 
6.
Horwitz W. (Ed.), 2002. Method 920.15. In: Official Methods of Analysis of AOAC International. 17th ed. AOAC International, Gaithersburg, Md.
 
7.
Lewicki P.P., 2006. Design of hot air drying for better foods. Trends Food Sci. Technol. 17(4), 153–163.
 
8.
Li R., Song D., Vriesekoop F., Cheng L., Yuan Q., Liang H., 2016. Glucoraphenin, sulforaphene, and antiproliferative capacity of radish sprouts in germinating and thermal processes. Eur. Food Res. Technol. 243(4), 1–8.
 
9.
Mejia-Meza E.I., Yáñez J.A., Remsberg C.M., Takemoto J.K., Davies N.M., Rasco B., Clary C., 2010. Effect of dehydration on raspberries: polyphenol and anthocyanin retention, antioxidant capacity and antiadipogenic activity. J. Food Sci. 75(1), 5–12.
 
10.
Nowacka M., Śledź M., Wiktor A., Witrowa-Rajchert D., 2014. Changes of radical scavenging activity and polyphenols content during storage of dried apples. Int. J. Food Prop. 17(6), 1317–1331.
 
11.
Nowacka M., Wiktor A., Śledź M., Jurek N., Witrowa-Rajchert D., 2012. Drying of ultrasound pretreated apple and its selected physical properties. J. Food Eng. 113(3), 427–433.
 
12.
Oliviero T., Verkerk R., van Boekel M.A.J.S., Dekker M., 2014. Effect of water content and temperature on inactivation kinetics of myrosinase in broccoli (Brassica oleracea var. italica). Food Chem. 163, 197–201.
 
13.
Polovka M., Brezová V., Staško A., 2003. Antioxidant properties of tea investigated by EPR spectroscopy. Biophys. Chem. 106(1), 39–56.
 
14.
Robertson L.J., Johannessen G.S., Gjerde B.K., Loncarevic S., 2002. Microbiological analysis of seed sprouts in Norway. Int. J. Food Microbiol. 75(1), 119–126.
 
15.
Si X., Chen Q., Bi J., Wu X., Yi J., Zhou L., Li Z., 2016. Comparison of different drying methods on the physical properties, bioactive compounds and antioxidant activity of raspberry powders. J. Sci. Food Agr. 96(6), 2055–2062.
 
16.
Touati N., Barba F.J., Louaileche H., Frigola A., Esteve M.J., 2016. Effect of storage time and temperature on the quality of fruit nectars: Determination of nutritional loss indicators. J. Food Qual. 39(3), 209–217.
 
17.
Wu L., Hsu H.-W., Chen Y.-C., Chiu C.-C., Lin Y.-I., Ho J.A., 2006. Antioxidant and antiproliferative activities of red pitaya. Food Chem. 95(2), 319–327.
 
18.
Zhang C., Cao W., Hung Y.-C., Li B., 2016. Application of electrolyzed oxidizing water in production of radish sprouts to reduce natural microbiota. Food Control 67, 177–182.
 
ISSN:0084-5477
Journals System - logo
Scroll to top