en public specific orginal article <div style="text-align: justify;"><span style="font-size:11pt"><span style="line-height:115%"><span calibri="" style="font-family:"><b><span style="font-size:10.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="letter-spacing:-.1pt">Background:</span></span></span></span></b><span style="font-size:10.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="letter-spacing:-.1pt"> Autochthonous fruits such as Guavij&uacute; have beneficial health properties through their bioactive compounds and antioxidant capacity. This study aims to evaluate nutritional composition, phytochemical performance, total content of polyphenols, antioxidant capacity, and bioactive compounds of Guavij&uacute; (<i>Eugenia pungens</i>)</span></span></span></span> <span style="font-size:10.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="letter-spacing:-.1pt">fruits. <b>Methods:</b> Macronutrients were analyzed using Anthrona method for carbohydrates, Kjeldahl method for proteins, and Soxhlet method for total fat. Phytochemical screening was performed to detect phenols, flavonoids, saponins, alkaloids, steroids and triterpenoids, as well as leukoanthocyanidins and quinones. The total content of polyphenols was obtained using Folin-Ciocalteu method. Antioxidant capacity was determined by ORAC method, and the identification of bioactive compounds was carried out through LC-QqQ MS/MS. <b>Results:</b> Macronutrients were found in proportions of 33.4%, 5.5%, and 4.5% for carbohydrates, proteins, and fats, respectively. Phytochemical screening revealed the presence of phenols and triperthenoids. The total polyphenol content was 46.6 mg/g. Antioxidant capacity was 11394&plusmn;705 &mu;mol/100 g. <b>Conclusions:</b> The identified bioactive compounds were cyanidin, delphinidin, enotein B, quercetin, and myricitrin. The results revealed that beneficial health properties due to the content of bioactive compounds and antioxidant capacity, which constitutes a food, can prevent diseases.</span></span></span></span></span></span></span><br> &nbsp;</div> Eugenia pungens, Polyphenols, Antioxidant capacity, Phytochemical screening, Bioactive compounds. 468 477 http://jnfs.ssu.ac.ir/browse.php?a_code=A-10-399-2&slc_lang=en&sid=1 Eliana R Meza Miranda eliana.romina59@gmail.com 0000-0001-9791-8835 Yes Multidisciplinary Center for Technological Research - National University of Asunción. San Lorenzo - Paraguay. San Lorenzo – Paraguay Antonio Samudio 0000-0003-1374-7974 No Multidisciplinary Center for Technological Research - National University of Asunción. San Lorenzo - Paraguay. San Lorenzo – Paraguay Francisco Ferrerira 0000-0002-2793-6824 No Multidisciplinary Center for Technological Research - National University of Asunción. San Lorenzo - Paraguay. San Lorenzo – Paraguay Rafael Gómez 0000-0002-7393-9225 No Multidisciplinary Center for Technological Research - National University of Asunción. San Lorenzo - Paraguay. San Lorenzo – Paraguay Belén Rojas 0000-0001-5562-6658 No Faculty of Chemical Sciences - National University of Asunción. San Lorenzo – Paraguay Fátima Fernandez 0000-0003-1315-1716 No Faculty of Chemical Sciences - National University of Asunción. San Lorenzo – Paraguay Rodrigo Burgos 0000-0002-0235-7359 No Faculty of Chemical Sciences - National University of Asunción. San Lorenzo – Paraguay Gabriela Cardozo 0000-0002-8280-9975 No Faculty of Chemical Sciences - National University of Asunción. San Lorenzo – Paraguay José Ayala No Multidisciplinary Center for Technological Research - National University of Asunción. San Lorenzo - Paraguay. San Ana Pérez Carvajal 0000-0003-0940-9796 No National Center for Food Science and Technology. Costa Rica University Feliciano Prieg Capoteo 0000-0003-0697-719X No Analytical Chemistry Department. University of Córdoba - Spain.