A novel instrument for ascorbic acid detection based on the eddy current principle for oranges (Citrus x sinensis), pineapples (Ananas comosus), and bilimbi (Averrhoa bilimbi). - FADHLI, SHAHIBUL; SURBAKTI, MUHAMMAD SYUKRI; SUHUD, KHAIRI; HUSEN, ZAKARIA; OMAR, AHMAD FAIRUZ; SARI, SIDRATUN ULFA (Jurnal Natural, 2026)