#TITLE_ALTERNATIVE#

• Main Author: PUSPA KANIA NIM: 20715313, PRINA
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/29988
• Institution: Institut Teknologi Bandung

Dragon fruit is currently widely consumed because it contains antioxidants, <br /> <br /> minerals, vitamins, and fiber. The health benefits of consuming fruits can be <br /> <br /> reduced by the presence of heavy metal contamination. This study aims to analyze <br /> <br /> the heavy metal content of cadmium (Cd), lead (Pb), mercury (Hg), arsenic (As) <br /> <br /> and zinc (Zn) in the peel and flesh red dragon fruit (Hylocereus costaricensis), white <br /> <br /> dragon fruit (Hylocereus udantus), and the fruit of the yellow dragon (Selenicereus <br /> <br /> megalanthus). In this study, three varieties of dragon fruit each separated between <br /> <br /> flesh and peel, then crushed and dried with freeze dry or oven. Further heavy metal <br /> <br /> extraction was carried out by dry digestion using a furnace at 450 <br /> <br /> o <br /> <br /> C-600 <br /> <br /> o <br /> <br /> C and 6 <br /> <br /> N HCl. Further the content of heavy metal in the solution was analyzed with Atomic <br /> <br /> Absorption Spectrophotometer (AAS) for Pb, Cd, and Zn and Neutron Activation <br /> <br /> Analysis (NAA) for As and Hg. The heavy metal content in the sample was <br /> <br /> determined by comparing the sample absorbance to the standard calibration curve <br /> <br /> equation. The content of Pb, Cd, and Zn in red, white, and yellow dragon flesh are <br /> <br /> respectively Pb 0.46 ± 0.075 mg/kg, 0.477 ± 0.242 mg/kg, and 0.188 ± 0.003 mg/kg, <br /> <br /> Cd, 0.114, ± 0.15 mg/kg, 0.044 ± 0.016 mg/kg, and 0.004 ± 0.001 mg/kg, and Zn, <br /> <br /> 6.20 ± 2.127 mg/kg, 38.298 ± 1.303 mg/kg, and 12.447 ± 0.638 mg/kg. The content <br /> <br /> of Pb, Cd, and Zn in the peels of red, white, and yellow dragon fruit are Pb, 0.483 <br /> <br /> ± 0.005 mg/kg, 0.790 ± 0.91 mg/kg, and 0.744 ± 0.060 mg/kg, Cd, 0.013 ± 0.001 <br /> <br /> mg/kg, 0.010 ± 0.003 mg/kg, and 0.016 ± 0.004 mg/kg, Zn 9,787 ± 3.670 mg/kg, <br /> <br /> 25.293 ± 7.278 mg/kg, and 15.546 ± 4.828 mg/kg. The results of arsenic analysis <br /> <br /> (As) and mercury (Hg) with AAN show that arsenic was not detected in dragon <br /> <br /> fruit varieties. Furthermore the level of Hg for the peels of white dragon 0.054 ± <br /> <br /> 0.02 mg/kg exceeded the maximum consumed-allowance limit according to the <br /> <br /> Director General of FDA (POM) 1989 of 0.03 mg/kg while for the flesh still below <br /> <br /> the maximum consumed-allowance limit of Hg in red dragon fruit meat 0.022 ± <br /> <br /> 0.007 mg/kg and in white dragon fruit flesh 0.018 ± 0.003 mg/kg. Result of <br /> <br /> Validation Methods for Flame Spectroscopy FAAS and Grafit GFAAS indicate that <br /> <br /> this method can be used in analyzing heavy metal content form peel and flesh of <br /> <br /> dragon fruit. <br />