Penelitian ini menggunakan penelitian deskritif menggunakan pendekatan kuantitatif menggunakan metode Luff Schoorl yang bertujuan untuk mengetahui kadar gula preduksi berupa glukosa pada beras Krayan yaitu beras tuan sia, tuan boda dan udara. Adapun uji yang dilakukan yaitu uji kuantitatif gula preduksi, wawancara pra penelitian dan dokumentasi. Karbohidrat memiliki sifat mereduksi dikarenakan adanya gugus aldhida dan keton bebas dalam molekul karbohidrat. Hasil penelitian per 10 gram nasi menunjukan bahwa kandungan glukosa dalam beras udara sebesar 5,1584 mg (0,146%), tuan sia 6,4512 mg (0,153%), tuan boda 6,8104 mg (0,166%) dan telor mas 15,668 mg (1,166%). Hasil penelitian kadar glukosa dituangkan dalam bentuk soal literasi sains bagi siswa kelas XI khususnya pada mata pelajaran biologi dengan skor validasi yaitu 3,5 point dan termasuk dalam kriteria penilaian valid.

This study used descriptive research with a quantitative approach and Luff Schoorl method aiming to figure out the glucose level reducing agent in the form of glucose contained in Krayan rice consisting of rice belonging ti Tuan Sia, Tuan Boda, Udara dan Telor Mas. A quantitative test was conducted on glucose reducing agent, while interview was performed before starting the research and documentation. Carbohydrate has reductive characteristics due to the existence of aldehyde groups and free ketones in the carbohydrate molecules. The research results on each 10 gram of rice show that the glucose contents were 5.1584 mg (0.146%), 6.4512 mg (0.153%), 6.88104 mg (0.166%) and 15.668 mg (1.166%) respectively in Udara, Tuan Sia, Tuan Boda and Telor Mas. The research results also show that the glucose level implemented in the form of science literacy questions for Grade XI students, especially in Biology Subject had the validation score of 3.5 points and classified into valid criteria.