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Lipophilic bioactive compounds in the oils recovered from cereal by‐products
Author(s) -
Górnaś Paweł,
Rudzińska Magdalena,
Raczyk Marianna,
Soliven Arianne
Publication year - 2016
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.7511
Subject(s) - bran , food science , chemistry , linoleic acid , germ , campesterol , palmitic acid , rice bran oil , fatty acid , biology , raw material , biochemistry , organic chemistry , sterol , cholesterol , microbiology and biotechnology
BACKGROUND The by‐products of seven different cereal grains were investigated as a source of extractable oil, rich in lipophilic bioactive compounds. RESULTS Oil yields (g kg −1 DW ) recovered from cereal by‐products were as follows: 189 (rice bran) > 112 (wheat germ) > 74 (corn bran) > 58 (oat bran) > 41 (buckwheat bran) > 39 (spelt bran) > 33 (wheat bran) > 27 (rye bran). The main fatty acids identified in the studied oil samples were palmitic acid (11.39–17.23%), oleic acid (11.76–42.73%), linoleic acid (35.54–62.65%) and α ‐linolenic acid (1.05–9.46%). The range of total tocochromanols and phytosterols in the obtained oils was 0.369–3.763 and 1.19–35.24 g kg −1 of oil, respectively. The oils recovered from buckwheat and corn bran, and wheat germ were dominated by tocopherols (99.9, 84.2 and 96.5%, respectively), whereas the oat, rice, rye, spelt, wheat bran oils were rich in tocotrienols (73.9, 79.6, 78.1, 90.6 and 73.8%, respectively). The campesterol and β ‐sitosterol constituted 10.1–32.5 and 30.4–63.7%, respectively, of total phytosterols contents identified in all of the studied samples. CONCLUSION The present study demonstrated that oils recovered from the cereal by‐products are richer sources of bioactive compounds, compared with traditional oils. © 2015 Society of Chemical Industry