Abstract
To detect those fruits which have been subjected to low-dose irradiation (0.5-3 kGy), two methods of chromatography (GC-MS and LC-LC-GC-FID) were used to determine the radiolytic compounds of lipids formed after irradiation, such as alkanes and alkenes. Extraction of volatile hydrocarbon compounds from some parts of irradiated fruits, e. g. the flesh (avocado), seeds (papaya) and kernels (mango and apricot) was carried out. The analysis of hydrocarbons by GC-MS proved the suitability of using C17∶1, C16∶2, C15∶0 and C14∶1 as markers for avocados irradiated with a low dose (0.75 kGy). The same indicators appeared following the analysis of papayas and mangoes irradiated with 1.5, and 3.0 kGy. Also, C15∶0, C14∶1 and C16∶3 can be used to identify apricots irradiated with a low dose (0.5 kGy). The detection of alkenes was only improved by a more selective isolation, e.g. of dienes or trienes by LC-LC-GC-FID. Within a few minutes, apricots and avocados irradiated at low doses (0.5 and 0.75 kGy) can be recognized by the indicators C16∶2, C17∶2 and C16∶3, without interfering peaks. In all cases, C16∶1, C16∶2, C16∶3 as well as significant amounts of C17∶2 can be used as markers for fruit irradiation.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
(1990) Food Irradiat News Lett Suppl 14: 3
Schreiber G, Helle N, Bögl KW (1993) Int J Radiat Biol 63: 105
Sjoberg AK, Tuominen JP, Kiutamo T, Luukkonen SM (1992) J Sci Food Agric 59: 65–75
Singh H, Guerrero A, Kremers W (1993) J Food Sci 58: 49
Lesgands G, Raffi J, Pouliquen A, Chaouch A, Giamarchi P, Prost M (1993) J Am Oil Chem Soc 70: 179–185
Ang LA, Langerak DIS, Duren MD, Uzcategu E, Farkas J, Rubio C (1986) Acta Aliment 15: 57
Monique L, Linda B, Michele J, Sylvain M, Marcel G (1990) Radiat Phys Chem 35: 296
Thomas P (1988) Crit Rev Food Sci Nutr 26: 313
Moy JH, Parker JG, Osullivan E, Parker G (1985) Food irradiation processing. International Atomic Energy Agency, Vienna, STI/PUB/695: 159
Wholesomeness of irradiated food (1977) Report of Joint FAO/IAEA/WHO Expert Committee, Technical Report Series 604: 34
Schulzki G, Spiegelberg A, Helle N, Bögl KW, Schreiber GA (1992) BCR Information. Eur/14315/EN/250–263
Biederman M, Grob K, Frohlich D, Meier W (1992) Z Lebensm Unters Forsch 195: 409
Nawar WW (1986) Food Rev Int 21: 45
Abou-Aziz A, Rizk A, Hammouda F, El-Tanahy M (1973) Qual Plant Mater Veg 22: 253
Lawes GS (1980) Orchardist NZ 53: 63
Scianlepore V, Dorbessan W (1981) Riv Agric Subtrop Trop 75: 109
Eaks IL (1990) Acta Hortic (The Hague) 269: 141
Blakesly CN, Loots JG, Du Plessia LM, De Bruyn G (1979) J Agric Food Chem 27: 42
Chan HT, Taniguchi MH (1985) J Food Sci 50: 1092
Marfo EK, Oke OL, Afolabi OA (1986) Food Chem 22: 259
Van Pee W, Foma M, Boni L (1981) Fette Seifen Anstrichm 83: 383
Hussain MG, Haque ME, Gafur MA, Ali MH, Ali MM (1983) Bangladesh J Sci Ind Res 18: 146
Lakshminaray G, Rao TC, Ramalingaswamy PA (1983) J Am Oil Chem Soc 60: 88
Ali MA, Gafur MA, Rahman MS, Ahmed GM (1985) J Am Oil Chem Soc 62: 520
Augustin MA, Ling ET (1987) Pertanika 10: 53
Gutfinger T, Romano S, Letan A (1972) J Food Sci 37: 938
Hallabo SAS, El-Wakiel FA, Morsi MKS (1975) Egypt J Food Sci 3: 1
Ogihara H, Itoh S, Tsuyuki H (1982) J Jpn Soc Food Sci Technol 29: 221
Beyer R, Melton LD (1990) NZ J Crop Hortic Sci 18: 39
Nawar WW, Balboni JJ (1970) J Assoc Off Anal Chem 53: 726
Merritt C, Angelini P, Graham RA (1978) J Agric Food Chem 26: 29
Nawar WW, Zhu ZR, Yoo YJ (1990) In: Johnston DE, Stevenson MH (eds) Food irradiation and the chemist. The Royal Society of Chemists, London pp 13–24
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Farag, S.ED.A. Detection of irradiated fruits by gas-chromatographic methods. Z Lebensm Unters Forch 202, 451–457 (1996). https://doi.org/10.1007/BF01197264
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01197264