Gula pereduksi

Struktur glukosa
Struktur fruktosa

Gula pereduksi merupakan golongan gula (karbohidrat) yang dapat mereduksi senyawa-senyawa penerima elektron, contohnya adalah glukosa dan fruktosa.[1] Ujung dari suatu gula pereduksi adalah ujung yang mengandung gugus aldehida atau keto bebas. Semua monosakarida (glukosa, fruktosa, galaktosa) dan disakarida (laktosa,maltosa), kecuali sukrosa dan pati (polisakarida), termasuk sebagai gula pereduksi.[1] Umumnya gula pereduksi yang dihasilkan berhubungan erat dengan aktivitas enzim, yaitu semakin tinggi aktivitas enzim maka semakin tinggi pula gula pereduksi yang dihasilkan.[1] Jumlah gula pereduksi yang dihasilkan selama reaksi diukur dengan menggunakan pereaksi asam dinitro salisilat/dinitrosalycilic acid (DNS) pada panjang gelombang 540 nm.[1] Semakin tinggi nilai absorbansi yang dihasilkan, semakin banyak pula gula pereduksi yang terkandung.[2]

Lihat pula

Referensi

  1. ^ a b c d Lehninger AL. 1982. Dasar-Dasar Biokimia Jilid 1. Suhartono MT, penerjemah. Jakarta: Erlangga.
  2. ^ Kanti A. 2005. Actinomycetes selulolitik dari tanah hutan Taman Nasional Bukit Duabelas, Jambi. Biodiversitas 6(2):85-89.


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