USDA process eliminates major potato processing pollutant

Aims: Evaluate four potato genotypes in terms of sprouting and coloring depending on the storage time at 8 °C and their potential for use by the potato processing industry.Study Design: The experiment was carried out in a completely randomized design, in a split-plot scheme with five replications, each replication consisting of two tubers.Place and Duration of Study: Tubers were obtained from the production area of Perdizes, Minas Gerais, Brazil (Latitude 19º 21’ 10’’ N and Longitude 47º 17’ 34’’ E and 1000 m).Methodology: The genotypes Alibaba, Arsenal, Antartica and Babylon were stored at 8° C for up to 180 days, with the analysis of sprouting, visual coloration before and after frying, parameters L*, b* and c*. Results: All potato genotypes were light colored before frying, category 1 (USDA). Babylon obtained the best parameters of b * and c *. Antartica and Babylon potato genotype showed low sprouting.Conclusion: The Arsenal and Antartica potato genotype have potential for use by the processing industry due to the color of the sticks before and after frying and low sprouting.The Alibaba potato genotype was darkly colored after frying. Babylon was the potato genotype with the best color of the sticks after frying and less germination.

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Theoretical and Experimental Results on the Recovery of Potato Processing Residuals by Anaerobic Digestion

Revista de Chimie ◽

10.37358/rc.19.7.7373 ◽

2019 ◽

Vol 70 (7) ◽

pp. 2524-2529 ◽

Cited By ~ 2

Author(s):

Andreea D. Dima ◽

Carmen Mateescu ◽

Oana C. Parvulescu ◽

Eduard M. Lungulescu ◽

Nicoleta O. Nicula

Keyword(s):

Anaerobic Digestion ◽

Gompertz Model ◽

Economic Feasibility ◽

Potato Processing ◽

Biomethane Potential ◽

Potato Waste ◽

Cone Model ◽

Treatment Technologies ◽

Negative Environmental Impact ◽

Modified Gompertz Model

Anaerobic digestion of organic matter with high moisture content has proven to be a suitable method for disposal of wet organic residuals with several advantages compared to other treatment technologies. This paper aimed at evaluating the theoretical and experimental biomethane potential of food processing residuals that are responsible for negative environmental impact, with exemplification for the potato processing waste. The biomethane potential is a useful parameter to assess the economic efficiency of anaerobic digestion processes as it can considerably influence the efficiency and the economic feasibility of the energy recovery technologies. Both experimental and theoretical biomethane potentials of potato waste in mesophilic anaerobic digestion as well as biodegradability of the substrate were estimated. Moreover, effects of microalgal extract addition on the digestion of potato waste were examined in an attempt to stimulate the anaerobic digestion. Cone model and a modified Gompertz model were used to predict the dynamics of biomethane production.

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