Sri Rachmayanti , A. .; Hasan, N. .; Suci Fitriani Sammulia; Henny Rachdiati; Yeni Febriyanti. Antioxidant Activity Test of Packaged Juice Variants of Guava (psidium Guajava L.) Using FRAP (ferric Reducing Antioxidant Power) Method. midwifery 2023, 11, 322-328.