title: DNA damage protection against free radicals of two antioxidant neolignan glucosides from sugarcane molasses.
abstract: BACKGROUND
  Sugarcane molasses is a potential by-product of the sugarcane manufacturing industry that is rich in antioxidant materials. The present study aimed to obtain antioxidative compounds from sugarcane molasses and to evaluate their ability to protect DNA from oxidative damage.
  
  
  RESULTS
  Two neolignan glucosides were isolated from sugarcane molasses using bioassay and UV spectra monitoring-guided fractionation. The compounds were elucidated as (7R,8S)-dehydrodiconiferyl alcohol-4-O-β-d-glucoside (1) and (7S,8R)-simulanol-9'-O-β-d-glucoside (2). Neolignan glucoside 2 protected against DNA damage caused by free radicals more effectively than did neolignan glucoside 1 (13.62 and 9.08 µmol L(-1) for peroxyl and hydroxyl radicals, respectively, compared to 48.07 and 14.42 µmol L(-1) ). Additionally, neolignan glucoside 2 exhibited superior DNA protection against free radicals compared with various known antioxidative compounds, including p-coumaric acid, ferulic acid, vanillic acid and epigallocatechin gallate.
  
  
  CONCLUSIONS
  The isolated neolignan glucosides from sugarcane molasses are able to protect DNA from oxidative damage caused by free radicals. This is the first identification of these two compounds in sugarcane molasses. The sugarcane molasses can therefore be used as potential nutraceutical preventative agents, and the findings may foster the utilization of this by-product as a bioresource-based product. © 2015 Society of Chemical Industry.
authors: Tropical Biosphere Research Center, University of the Ryukyus, Nishihara, Okinawa, 903-0213, Japan.
authors: Yonathan
authors: Y
authors: Asikin
authors: Department of Bioscience and Biotechnology, Faculty of Agriculture, University of the Ryukyus, Nishihara, Okinawa, 903-0213, Japan.
authors: Makoto
authors: M
authors: Takahashi
authors: Product Development Division, Mitsui Sugar Co. Ltd, Tokyo, 103-8423, Japan.
authors: Masami
authors: M
authors: Mizu
authors: Department of Bioscience and Biotechnology, Faculty of Agriculture, University of the Ryukyus, Nishihara, Okinawa, 903-0213, Japan.
authors: Kensaku
authors: K
authors: Takara
authors: Tropical Biosphere Research Center, University of the Ryukyus, Nishihara, Okinawa, 903-0213, Japan.
authors: Hirosuke
authors: H
authors: Oku
authors: Department of Bioscience and Biotechnology, Faculty of Agriculture, University of the Ryukyus, Nishihara, Okinawa, 903-0213, Japan.
authors: Koji
authors: K
authors: Wada
mesh_terms: D000818:Animals; D002417:Cattle; D004249:DNA Damage / Q000187:drug effects*; D016166:Free Radical Scavengers / Q000737:chemistry / Q000494:pharmacology*; D005960:Glucosides / Q000737:chemistry / Q000494:pharmacology*; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008965:Molasses; D020011:Protective Agents / Q000737:chemistry / Q000494:pharmacology*; D031786:Saccharum; D013329:Structure-Activity Relationship
chemical_list: D016166:Free Radical Scavengers; D005960:Glucosides; D020011:Protective Agents
keywords: DNA damage protection; antioxidant material; free radicals; neolignan glucoside; sugarcane molasses