TY - JOUR
T1 - A comparative study of flavonoid contents and antioxidant activities of supercritical CO2 extracted pine barks grown in different regions of Turkey and Germany
AU - Yesil-Celiktas, O.
AU - Otto, F.
AU - Parlar, H.
N1 - Funding Information:
Acknowledgments The postdoctoral research grant provided by TUBITAK-BIDEB for performing this research is gratefully acknowledged.
PY - 2009
Y1 - 2009
N2 - Utilization of renewable resources is gaining more emphasis and large quantities of solid wastes are produced by the forestry industry. However, there is a significant lack of transformation of such wastes into potentially novel products. The barks of various Pinus species from different regions of Turkey (P. pinea, P. sylvestris, P. nigra) and Germany (P. parviflora, P. ponderosa, P. sylvestris, P. nigra) were extracted by supercritical CO2 extraction. Different sources of variability including location and species were evaluated for their active constituents, (-)-catechin, (-)-epiatechin, (-)-catechin gallate, and taxifolin, applying HPLC, radical scavenging activities (RSA), and total phenol analysis. The total amounts of flavan-3-ols (9.916 mg/g) were the highest in P. pinea extract harvested from Aydin, having the hottest climate and longest duration of sun (P < 0.01). In addition, P. pinea had the highest RSA (81.0 %) and total phenol value (83.0 mg GAE/g).
AB - Utilization of renewable resources is gaining more emphasis and large quantities of solid wastes are produced by the forestry industry. However, there is a significant lack of transformation of such wastes into potentially novel products. The barks of various Pinus species from different regions of Turkey (P. pinea, P. sylvestris, P. nigra) and Germany (P. parviflora, P. ponderosa, P. sylvestris, P. nigra) were extracted by supercritical CO2 extraction. Different sources of variability including location and species were evaluated for their active constituents, (-)-catechin, (-)-epiatechin, (-)-catechin gallate, and taxifolin, applying HPLC, radical scavenging activities (RSA), and total phenol analysis. The total amounts of flavan-3-ols (9.916 mg/g) were the highest in P. pinea extract harvested from Aydin, having the hottest climate and longest duration of sun (P < 0.01). In addition, P. pinea had the highest RSA (81.0 %) and total phenol value (83.0 mg GAE/g).
KW - Antioxidant activity
KW - Catechins
KW - Pine bark
KW - Supercritical fluid extraction
KW - Taxifolin
UR - http://www.scopus.com/inward/record.url?scp=70349928574&partnerID=8YFLogxK
U2 - 10.1007/s00217-009-1101-5
DO - 10.1007/s00217-009-1101-5
M3 - Article
AN - SCOPUS:70349928574
SN - 1438-2377
VL - 229
SP - 671
EP - 677
JO - European Food Research and Technology
JF - European Food Research and Technology
IS - 4
ER -