Potato peels

Rodriguez de Sotillo D, Hadley M, Holm ET. 1994. Phenolic in aqueous potato peel extract extraction, identification and degradation. J Food Sci 59 649-651. 

Singh N and Rajini PS. 2003. Free radical scavenging activity of an aqueous extract of potato peel. Food Chem 85 611-616. 

Plant. Endosulfan sulfate was formed when endosulfan was translocated from the leaves to roots in both bean and sugar beet plants (Beard and Ware, 1969). In tobacco leaves, a-endosulfan is hydrolyzed to endosulfan diol (Chopra and Mahfouz, 1977). Stewart and Cairns (1974) reported the metabolite endosulfan sulfate was identified in potato peels and pulp at concentrations of 0.3 and 0.03 ppm, respectively. They also reported that the half-life for the conversion of a-endosulfan to P-endosulfan was 60 d. 

Snbrahmanyam M. (1996) Honey dressing versns boiled potato peel in the treatment of bnms A prospective randomized stndy. Burns 22 429-508. 

Table 6.2 contains a survey of glycoalkaloid content in potatoes analyzed using the above HPLC NH2 column technique. None of the whole potatoes exceeded the 200 mg total glycoalkaloids per kg of potatoes (see A + B column). However, this was not the case for potato peel. Five of the eight samples exceeded this benchmark. The high content of peels should not be of concern, unless consumers ate large amounts of peel, as they sometimes do in some commercial products, such as potato skin appetizers. 

Table 6.2 Glycoalkaloid and calystegine content of potato flesh, potato peel, and whole potatoes of eight potato cultivars... 

We validated and improved a GC-MS method to measure the two major potato calystegines A3 and B2 in freeze-dried potato peel and potato flesh samples (Friedman et al., 2003c). We used this method to analyze the same potatoes that we previously analyzed for glycoalkaloids (Table 6.2). 

Figure 6.7 LC-MS chromatograms of an extract of Superior potato peel monitored at 280 nm, 340 nm, and TIC. Column Inertsil ODS-3 (3 p,m, 4.0 x 150 mm). Flow rate 0.2 mL/min. Column temperature 30°C. Mobile phase acetonitrile 0.5% formic acid (gradient mode).

Figure 6.8 UV spectra of standard chlorogenic acid (a) trans-cinnamic acid (b) cafFeic acid (c) p-coumaric acid (d) and femlic acid (e). The spectra of peaks 1 (chlorogenic acid) (f), peak 2 (chlorogenic acid isomer) (g), and peak 3 (caffeic acid) (h) were determined with HPLC fractions isolated from extracts of Superior potato peel.

Kanatt, S. R., Chander, R., Radhakrishna, P., Sharma, A. (2005). Potato peel extract - a natural antioxidant for retarding lipid peroxidation in radiation processed lamb meat J. Agric. Food Chem., 53, 1499-1504. 

Nara, K., Miyoshi, T., Honma, T., Koga, H. (2006). Antioxidative activity of bound-form phenolics in potato peel. Biosci. Biotechnol. Biochem., 70, 1489-1491. 

Rodriguez de Sotillo, D., Hadley, M., Wolf-Hall, C. (1998). Potato peel extract a nonmutagenic antioxidant with potential antimicrobial activity. J. FoodScl, 63, 907-910. 

Potato peels are waste by-products of the potato-processing industry. They are a good source of vitamin C, vitamin Be, copper, potassium, manganese, and dietary fiber. They also contain a... 

Mukherjee, A. K., Adhikari, H., Rai, S. K. (2008). Rroduction of alkaline protease by a thermophilic Bacillus subtilis under solid-state fermentation (SSF) condition using Imperata cylindrical grass and potato peel as low-cost medium Characterization and application of enzyme in detergent formulation. Biochem. Engg. J.,39, 353-361. 

Shukla, J., Kar, R. (2006). Potato peel as a solid state substrate for thermostable a-amylase production by thermophilic Bacillus isolates. World J. Microbiol. BiotechnoL, 22, 417 22. 

Singh, N., Kamath, V., Narasimhamurthy, K., Rajini, P. S. (2008). Protective effect of potato peel extracts against carbon tetrachloride-induced liver injury in rats. Environ. Toxicol. Pharmacol, 26(2), 241-246. 

Zia-ur-Rehman, Habib, F., Shah, W. H. (2004). Utilization of potato peels extract as a natural antioxidant in soy bean oil. Food Chem., 85(2), 215-220. 

ME Camine, RJ Bushway, J Zhao, B Perkins, LR Paradis. Fate of thiabendazole and chlorpropham residues in extruded potato peels. J Agric Food Chem 43 495-47, 1995... 

Figure 2. Relation between sprouting of Red Pontiac potato tubers (A) and level of endogenous gibberellins in potato peels and buds during and after rest (C) as measured by internode elongation of maize mutant d5( B)...

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