{"id":5717,"date":"2025-03-13T07:56:07","date_gmt":"2025-03-13T07:56:07","guid":{"rendered":"https:\/\/www.ptfos.unios.hr\/novicjfst\/?p=5717"},"modified":"2025-03-13T08:08:53","modified_gmt":"2025-03-13T08:08:53","slug":"cjfst-2025-17-1-06","status":"publish","type":"post","link":"https:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/2025\/03\/13\/cjfst-2025-17-1-06\/","title":{"rendered":"CJFST.2025.17.1.06"},"content":{"rendered":"

\"\"<\/a><\/em><\/h1>\n

Nutritional and antioxidant profiling of Algerian rapeseed seeds (Brassica napus L<\/em>.) and its cold-pressed by-products<\/strong><\/h1>\n

\"https:\/\/orcid.org\/0000-0002-6576-8980\"<\/a><\/strong>Kheira Rebbah1<\/sup>,\"https:\/\/orcid.org\/0000-0002-4027-9670\"<\/a>Samira Meziani1*<\/sup>,\"https:\/\/orcid.org\/0000-0003-0811-7820\"<\/a>Abbassia Demmouche1<\/sup>,\"https:\/\/orcid.org\/0009-0001-4891-2522\"<\/a>Lahouaria Labga1<\/sup>,\"https:\/\/orcid.org\/0000-0003-2687-0613\"<\/a>Lallia<\/strong> Amara1<\/sup>, \"https:\/\/orcid.org\/0000-0002-6778-786X\"<\/a>Fatima Zohra Badri2<\/sup>,\"https:\/\/orcid.org\/0009-0000-8897-9003\"<\/a>Ibtissem Ghaffari3<\/sup>,\"https:\/\/orcid.org\/0000-0002-6036-1057\"<\/a>Fatima Zohra Chenni1<\/sup>,\"https:\/\/orcid.org\/0009-0003-2702-5953\"<\/a>Manel Nardjes Toumi4<\/sup>, \"https:\/\/orcid.org\/0009-0000-0976-1576\"<\/a>Norredine Menadi1<\/sup><\/strong><\/p>\n

1<\/sup><\/em>Djillali Liabes University Laboratory of Biotoxicology, Faculty of Natural Sciences and Life, BP 89 \u2013 22000 Sidi Bel Abbes, Algeria
\n<\/em>2<\/sup><\/em>Scientific and<\/em> Technical<\/em> Research<\/em> Center in<\/em> Physicochemical Analysis CRAPC,<\/em> BP<\/em> 384,<\/em> 42004 Bou-Ismail,<\/em> Algeria
\n<\/em>3<\/sup><\/em>University of Dr.<\/em> Moulay Tahar Saida,<\/em> Laboratory of Biotoxicology,<\/em> Pharmacognosy<\/em> and biological<\/em> valorization of plants, 20000 Saida, Algeria
\n<\/em>4<\/sup><\/em>Djillali Liabes University of Sidi Bel-Abbes, LEDE Laboratory, 22000 Sidi Bel Abbes, Algeria<\/em><\/p>\n\n\n\n\n\n\n\n\n\n\n
ARTICLE INFO<\/strong><\/td>\nABSTRACT<\/strong><\/td>\n<\/tr>\n
TYPE: <\/strong>Original scientific paper<\/em>
\nhttps:\/\/doi.org\/10.17508\/CJFST.2025.17.1.06<\/a>
\nPDF<\/strong><\/a><\/td>\n		This study investigated the “Zitna” variety of rapeseed seeds (Brassica napus L<\/em>.) cultivated in Algeria and their by-product cakes used for animal feed after cold extraction. Physicochemical parameters, mineral profile, phenolic compounds (extracted with acetone, methanol, ethanol, and water), and antioxidant activity by DPPH free radical scavenging were analysed. The methanolic extract of the Zitna variety were analysed using HPLC. The results showed minor differences in physicochemical composition. The protein content was 3.79 \u00b1 0.01 mg\/mL in the seeds and
\n4.92 \u00b1 0.04 mg\/mL in the cakes, reflecting an increased protein concentration in the by-products due to the extraction process. Mineral concentrations were determined using the flame atomic absorption spectroscopy (FAAS) technique, which revealed that cakes had higher levels of essential minerals than the seeds and the most abundant element was potassium (K) with a concentration (27.2 \u00b1 0.8 mg\/L). The highest total phenolic content (TPC) was observed in acetone extracts, with seeds having 67.7 \u00b1 4.3 mg GAE\/g and cakes 61.3 \u00b1 1.1 mg GAE\/g. Methanol extracts showed the highest total flavonoid content (TFC), with seeds containing 23.5 \u00b1 0.6 mg QE\/g and cakes
\n18.5 \u00b1 0.6 mg QE\/g. Antioxidant activity, measured by IC50<\/sub> values, was higher in seeds compared to cakes, with acetone extracts having IC50<\/sub> values of 6.5 mg\/mL for seeds and 14.2 mg\/mL for cakes. The negative correlations were detected between IC50 and phenolic contents in seeds (-0.98; -0.97) and cakes (-0.98; -0.990) respectively. The chromatogram of the ‘Zitna’ rapeseed extract showed that sinapic acid is the major compound, with antioxidant activity enhanced by the novel discovery of gossypin, a flavonoid with antioxidant and anti-inflammatory properties. These findings demonstrate that cold-pressed extraction of Algerian rapeseed seeds preserves and concentrates valuable nutritional and antioxidant properties in the by-products, making them suitable for various industrial applications.<\/td>\n<\/tr>\n
*<\/strong>CORRESPONDENCE
\n<\/strong>Samira Meziani
\nmeziani_samira@yahoo.fr<\/td>\n<\/tr>\n
ARTICLE HISTORY
\n<\/strong>Received: November 11, 2024
\nAccepted: January 20, 2025<\/td>\n<\/tr>\n
CITATION
\n<\/strong>Rebbah K, Meziani S, Demmouche A, Labga L, Amara L, Badri FZ, Ghaffari I, Chenni FZ, Toumi MN, Menadi N. Nutritional and antioxidant profiling of Algerian rapeseed seeds (Brassica napus L<\/em>.) and its cold-pressed by-products. Croatian Journal of Food Science and Technology (2025) 17 (1) 81-100<\/td>\n<\/tr>\n
\"\"<\/a><\/strong>C<\/strong>OPYRIGHT: <\/strong>\u00a9 2024 by the author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY)<\/em><\/a>.<\/em><\/td>\n<\/tr>\n
KEYWORDS<\/strong><\/p>\n

antioxidant activity; cakes; correlations; minerals; polyphenolic content<\/td>\n<\/tr>\n

KEY CONTRIBUTION<\/strong><\/p>\n

Cold extraction enriched rapeseed cakes with proteins and minerals, particularly potassium, optimizing their nutritional value for animal feed. Acetone and methanol allowed targeted extraction of phenolic and flavonoid compounds, enhancing antioxidant activity, particularly in seeds. Finally, the discovery of gossypin, an antioxidant flavonoid, enriches the functional profile of Algerian rapeseed.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Nutritional and antioxidant profiling of Algerian rapeseed seeds (Brassica napus L.) and its cold-pressed by-products Kheira Rebbah1,Samira Meziani1*,Abbassia Demmouche1,Lahouaria Labga1,Lallia Amara1, Fatima Zohra Badri2,Ibtissem Ghaffari3,Fatima Zohra Chenni1,Manel Nardjes Toumi4, Norredine Menadi1 1Djillali Liabes University Laboratory of Biotoxicology, Faculty of Natural Sciences and Life, BP 89 \u2013 22000 Sidi Bel Abbes, Algeria 2Scientific and Technical Research … Op\u0161irnije<\/a><\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-5717","post","type-post","status-publish","format-standard","hentry","category-nekategorizirano"],"_links":{"self":[{"href":"https:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/posts\/5717","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/comments?post=5717"}],"version-history":[{"count":5,"href":"https:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/posts\/5717\/revisions"}],"predecessor-version":[{"id":5723,"href":"https:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/posts\/5717\/revisions\/5723"}],"wp:attachment":[{"href":"https:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/media?parent=5717"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/categories?post=5717"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ptfos.unios.hr\/novicjfst\/index.php\/wp-json\/wp\/v2\/tags?post=5717"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}