<p>M. Zainul Arifin:<br> <br> I believe that you would serve as an excellent reviewer of the manuscript, "A, Dwi Rindi PERBANDINGAN UJI METABOLIT SEKUNDER PADA EKSTRAK BUAH, KULIT, DAN DAUN MAJA DENGAN METODE SPEKTROFOTOMETRI UV-VIS," which has been submitted to Jurnal Insan Cendekia. The submission's abstract is inserted below, and I hope that you will consider undertaking this important task for us.<br> <br> Please log into the journal web site by 2021-05-06 to indicate whether you will undertake the review or not, as well as to access the submission and to record your review and recommendation. The web site is <a class="contextUrl-style-class" href="http://digilib.stikesicme-jbg.ac.id/ojs/index.php/jic">http://digilib.stikesicme-jbg.ac.id/ojs/index.php/jic</a><br> <br> The review itself is due 2021-05-13.<br> <br> If you do not have your username and password for the journal's web site, you can use this link to reset your password (which will then be emailed to you along with your username). <a class="passwordResetUrl-style-class" href="http://digilib.stikesicme-jbg.ac.id/ojs/index.php/jic/login/lostPassword">http://digilib.stikesicme-jbg.ac.id/ojs/index.php/jic/login/lostPassword</a><br> <br> Submission URL: <a href='http://digilib.stikesicme-jbg.ac.id/ojs/index.php/jic/reviewer/submission?submissionId=750' class='submissionReviewUrl-style-class'>http://digilib.stikesicme-jbg.ac.id/ojs/index.php/jic/reviewer/submission?submissionId=750</a><br> <br> Thank you for considering this request.<br> <br> admin_jib jib<br>STIKES Insan Cendekia Medika Jombang<br>Phone 085733666400<br>jurnalstikesicme@gmail.com<br> <br> <br> <br> "A, Dwi Rindi PERBANDINGAN UJI METABOLIT SEKUNDER PADA EKSTRAK BUAH, KULIT, DAN DAUN MAJA DENGAN METODE SPEKTROFOTOMETRI UV-VIS"<br> <br> Abstract<br> Introduction Some plants in Indonesia contain secondary metabolites and antioxidants, one of which is the Maja Plant. The part of the maja plant used in this research is the structure of the plant which includes the fruit, skin and leaves because it is thought to have antioxidant content. Purpose&nbsp; this study was to compare secondary metabolites found in the fruit, skin and leaves of maja. And to determine the antioxidant activity in these samples. Method experimental study method was used in this research. The population used is the maja plant. Samples were obtained from the Slerok Village, Tegal City, Central Java using the simple random sampling technique. Results The results yield extracts of maja fruit, skin, and leaves were 48,5%, 90,4% and 32,8%, respectively. The fruit, skin and leaf extracts of maja have the same secondary metabolite content in the form of tannins, alkaloids (Wagner), and vitamin C. While the IC50 obtained in the fruit, skin and leaf extracts of maja are 2897,3434 ppm, 7321,49 ppm, and 37,0937 ppm. Conclusion of this study is that there are secondary metabolites in the extracts of fruit, skin and leaves of maja. And the strongest antioxidant activity is found in maja leaf extract. Suggestion Further researchers are expected to be able to carry out research again with different extraction methods in order to know the results of different extraction methods.&nbsp;</p><br/><p>The following message is being delivered on behalf of Jurnal Insan Cendekia. ________________________________________________________________________</p>