Yazar "Matthaus, Bertrand" seçeneğine göre listele
Listeleniyor 1 - 20 / 21
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Chemical evaluation of citrus seeds, an agro-industrial waste, as a new potential source of vegetable oils(CONSEJO SUPERIOR INVESTIGACIONES CIENTIFICAS-CSIC, 2012) Matthaus, Bertrand; Özcan, Mehmet MusaThe seed oils from seven Turkish and ten Vietnamese varieties of Citrus fruits were examined for their fatty acid composition, tocopherols and sterol contents. The oil contents of the samples varied between 32.1 g/100 g and 58.8 g/100 g. The major fatty acid of the extracted seed oils was oleic (12.8-70.1%), followed by linoleic (19.5-58.8%) and palmitic (5.1-28.3%). Stearic, vaccenic, linolenic and arachidic acids were found at low levels. The total content of vitamin E active compounds in the oils ranged between 0.8 and 21.0 mg/100 g. The predominant isomers were alpha- and gamma-tocopherol, with approximate equal amounts between about 0.4 and 17.5 mg/100 g. The total sterol contents of the oils were found between 1310.54 and 3986.58 mg/kg, with beta-sitosterol as the predominant sterol that accounted for more than 70% of the total amount of sterols. Other sterols, campesterol (8.03-15.26%), stigmasterol (2.55-7.69%), Delta 5-avenasterol (1.80-5.67%), cholesterol (0.83-2.70%) and chlerosterol (0.93-1.78%) were detected in most of the oils. The results of the present study indicate that the seed oils of Citrus fruits are considered to be a potential oil source due to their fatty acid composition and important tocopherol and sterol, and might be used for edible applications as well as the production of potential value-added products.Öğe Effect of the harvest time on oil yield, fatty acid, tocopherol and sterol contents of developing almond and walnut kernels(JAPAN OIL CHEMISTS SOC, 2018) Matthaus, Bertrand; Özcan, Mehmet Musa; Al Juhaimi, Fahad; Adiamo, Oladipupo Q.; Alsawmahi, Omer N.; Ghafoor, Kashif; Babiker, Elfadil E.Oil content and bioactive properties of almond and walnut kernels were investigated in developing almond and walnut kernels at 10 days intervals. The oil contents of almond and walnuts after the first harvest (1.H) stage changed between 46.2% and 55.0% to 39.1% and 70.5%, respectively (p<0.05). Oleic acid contents of almond and walnut oils ranged from 71.98% (1.11) to 78.68% (5.11) and 10.51% (1.11) to 16.78% (2.H) depending on harvest (H) times, respectively (p<0.05). In addition, linolenic acid contents of walnut and almond oils were found between 62.35% and 67.78%, and 12.02% and 17.65%, respectively. The almond kernel oil after the first harvest stage contained 1.045, 1.058, 1.018, 0.995 and 0.819 mg/kg atocopherol, respectively. gamma-Tocopherol contents of walnut oil changed between 1.364 (3.11) and 2.954 mg/kg (1.11). The P-sitosterol contents of both almond and walnut oils were found between 1956.6 (5.H) and 2557.7 (1.11), and 1192.1 (3.11) and 4426.4 mg/kg (1.1-1). The study exhibited the presence of high percentage of oleic and linoleic for almond and walnut, respectively, and gamma-tocopherol and beta-sitosterol.Öğe FATTY ACID AND TOCOPHEROL CONTENTS OF SEVERAL SEED OILS(SPRINGER, 2014) Matthaus, Bertrand; Özcan, Mehmet Musa[Abstract not Available]Öğe Fatty acid and tocopherol contents of several soybean oils(TAYLOR & FRANCIS LTD, 2014) Matthaus, Bertrand; Özcan, Mehmet MusaThe oleic acid content of seed oils varied between 21.4% (ATAEM7) and 26.6% (Turksoy). The proportion of linoleic acid of soybean oil ranged from 49.0% (Turksoy) to 53.5% (ATAEM7), while the palmitic acid of oils varied between 9.2% (Adasoy) and 11.2% (Noya). The major tocopherols were yen -tocopherol, alpha-tocopherol and delta-tocopherol in all the varieties of soybean oil. As a result, this study showed that the seeds are to be a potential source of valuable oil which might be used for edible and other industrial applications.Öğe Fatty Acid Composition and Sterol Contents of Some Origanum Seed Oils(Wiley-VCH Verlag, 2018) Matthaus, Bertrand; Özcan, Mehmet Musa; Doğu, SüleymanThe aim of this present study is to determine oil content, fatty acid composition, and sterol profile of several Origanum species from Turkey to show the usefulness of this unusual raw material for oil processing. The oil content of Origanum seeds are found between 7.8% (O. brevides) and 27.2% (O. majorana). Linoleic [10.7% (O. brevidens) to 20.8% (O. vulgare subsp. viride)] and ?-linolenic acid [34.4% (O. brevidens) and 67.4% (O. minutiflorum)] are the predominant fatty acids of Origanum seed oils. The seed oils of Origanum samples only contain low levels of saturated fatty acids with palmitic and stearic acid as the main saturated fatty acids. Among all oil samples, the highest phytosterol content is found for ß-sitosterol ranging between 2462 mg kg?1 (O. vulgare subsp hirtum) and 5280 mg kg?1 (O. minutiflorum). Most of the Origanum species are very similar to O. vulgare regarding fatty acid and phytosterol composition, only O. brevidens shows a fatty acid composition with oleic and linoleic acid as predominant. Practical application: Today the search for new raw materials for oil processing is an ongoing task to solve the world-wide increasing demand for edible oil. From several investigations it is known that seed oil from Origanum vulgare is a good source of edible oil and essential fatty acids. The present work also gives some new information about the oil content as well as the composition of fatty acids and phytosterols of other members of the genus Origanum to evaluate their usefulness for the production of edible oil. In this study, oil content, fatty acid composition and sterol profile of several Origanum species collected from several provinces (Antalya, Bilecik, Bolu, Burdur, Hatay, Isparta, Karaman, Mersin and Osmaniye) of Turkey are determined. Most of the Origanum species are very similar to O. vulgare regarding fatty acid and phytosterol composition. Only O. brevidens shows a fatty acid composition with oleic and linoleic acid as predominant. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimÖğe Fatty acid composition and tocopherol content of the kernel oil from apricot varieties (Hasanbey, Hacihaliloglu, Kabaasi and Soganci) collected at different harvest times(SPRINGER, 2016) Matthaus, Bertrand; Özcan, Mehmet Musa; Al Juhaimi, FahadThe oil content of 'Hasanbey' apricot kernels (Prunus armeniaca L.) was created from harvest-1 (14.6.2011) (35.80 %; v/w) and harvest-4 (6.7.2011) (49.00 %; v/w). In addition, the oil content of 'Kabaasi' apricot kernels is created from 28.0 to 49.2 % (v/w) between the same harvests. The oleic acid of 'Hasanbey' nut oil is created from 42.94 to 59.13 % (v/w) from harvest-1 to harvest-4. The linoleic acid concentration in the same variety ranged from 44.99 to 31.71 % (v/w) depending on harvest times. In addition, 'Hacihaliloglu' apricot nut oil contained 45.74 % (harvest-1) to 66.79 % (harvest-4) oleic acid and 43.50 (v/w) to 24.43 % (v/w) linoleic acid at harvest-1 and harvest-4, respectively. The gamma-tocopherol content of Hacihaliloglu ranged from 47.63 mg/100 g (v/w) to 27.15 mg/100 g depending on maturation.Öğe Fatty acid composition, tocopherol, and sterol contents of sumac (Rhus coriaria L.) fruit oils(WILEY-BLACKWELL, 2015) Matthaus, Bertrand; Özcan, Mehmet MusaThe aim of this study is to establish oil content, fatty acid composition, tocopherol, and sterol contents of sumac fruits. The oil contents of sumac samples collected from different locations ranged from 7.7% (Hakkari) to 14.7% (Mut-Mersin). Sumac oil contained a considerable amount of linoleic acid (56.60-61.56%). The total amount of tocopherols ranged from 65.20mg/kg (Mersin-Mut) to 126.37mg/kg (Manisa). The highest -tocopherol content was in Mersin (Gulnar) fruits (4.64mg/kg) and Gaziantep (4.22mg/kg). The concentration of total sterols ranged from 2738.46mg/kg (Siirt) to 7211.61mg/kg (Kastamonu) in oils of all sumac fruits.Öğe Fatty acid, tocopherol and squalene contents of Rosaceae seed oils(SPRINGEROPEN, 2014) Matthaus, Bertrand; Özcan, Mehmet MusaBackground: The aim of current study is to establish the composition of these seeds belong to Rosaceae family with respect to fatty acid, tocopherol and squalene content. Results: The oil contents of seeds varied between 3.49 (Cotoneaster bullatus) to 46.15 g/100 g (Prunus tenella). The main fatty acids of seed oils were oleic (6.50 - 67.11 %), linoleic (22.08 - 68.62 %) and 20: 1n-7 (0.10 - 61.59 %). As observed, the oils of seed were rich in linoleic and oleic acids. Total tocopherol contents ranged between 7.06 mg/100 g (Prunus tenella) to 165.74 mg/100 g (Potentilla glandulosa ssp. pseudorupestris). The major tocopherols were gamma-tocopherol, ranging from 2.08 mg/100 g to 106.01 mg/100 g; alpha-tocopherol ranging from 2.86 mg100 g to 74.26 mg/100 g and delta-tocopherol ranging used in this experiment were found between 0.02 mg/100 g (Alchemilla caucasica) to o.29 mg/100 g (Cotoneaster simonsii). Conclusions: These results show that Rosaceae seed oils can be a potential saurce of valuable oil which might be useful for the evaluation of dietary information in important food crops and other industrial applications.Öğe Fatty Acid, Tocopherol and Sterol Contents of Forest Pine Seed Oil(ASIAN JOURNAL OF CHEMISTRY, 2013) Matthaus, Bertrand; Özcan, Mehmet MusaPine seed (Pinus pinea L.) oil was evaluated for oil content, fatty acid composition, tocopherol and sterol contents. The main identified fatty acids were palmitic acid (4.43 %), oleic acid (18.78 %), linoleic acid (60.39 %) and linolenic acid (6.94 %). The major tocopherols of seed oil was alpha-tocopherol (5.38 %) and gamma-tocopherol (37.46 %). The total tocopherol content had 43.88 mg/100 g. The sterol contents of pine seed oil were established as 68.80 % beta-stosterol, 10.66 % campesterol and 15.02 % 5-avenasterol. The total sterol was determined as 5868.39 mg/kg.Öğe Fatty Acid, Tocopherol, and Mineral Contents of Onopordum acanthium SEED and OIL(SPRINGER, 2014) Matthaus, Bertrand; Özcan, Mehmet Musa; Al Juhaimi, Fahad Y.[Abstract not Available]Öğe Fatty Acids, Tocopherol, and Sterol Contents of Some Nigella Species Seed Oil(CZECH ACADEMY AGRICULTURAL SCIENCES, 2011) Matthaus, Bertrand; Özcan, Mehmet MusaThe lipid compositions of the seed oils of some Nigella species were investigated. The total oil content of the seeds ranged from 28.0 to 36.4%. GC-MS fatty acid compositional analysis of the Nigella seed oils revealed the content of linoleic acid to be the highest (40.3-58.9%). Other prominent fatty acids were as follows: oleic (18.7-28.1%), palmitic (10.1-12.5%), 22: 1 D11 (3.2-3.8%) and stearic (2.6-3.1%) acids. All the Nigella seed oils analysed exhibited differences in their tocopherol contents and the differences were estimated. The oils extracted from the seeds contained between 1.70-4.12 mg/100 g alpha-T, 0.97-4.51 mg/100 g gamma-T, and 4.90-17.91 mg/100 g beta-T3. The total tocopherol content in seeds varied between 9.15 mg/100 g to 24.65 mg/100 g. The compositions of the sterol fractions were determined by gas liquid chromatography. The total amounts of sterols ranged between 1993.07 mg/kg to 2182.17 mg/kg. The main component was beta-sitosterol (48.35-51.92%), followed by 5-avenasterol, campesterol, and stigmasterol.Öğe Habitat effects on yield, fatty acid composition and tocopherol contents of prickly pear (Opuntia ficus-indica L.) seed oils(ELSEVIER, 2011) Matthaus, Bertrand; Özcan, Mehmet MusaIn this study, oil yields, fatty acid composition and tocopherol contents of prickly pear seeds were determined. The oil contents of the seeds of prickly pear (Opuntia ficus-indica) varied from 5.0% (Ortaoren) to 14.4% (Eskioba). Palmitic acid contents of seed oils ranged between 10.6% (Mut) and 12.8% (Kepez). While seed oils contained 13.0% (Hatay-2) to 23.5% (Kepez) oleic acid, its linoleic contents ranged between 49.3% (Kepez) and 62.1% (Hatay-2). Also, stearic acid contents of oils were found at the levels between 3.3% (Kozan and Sevkiye) and 5.4% (Kepez). The tocopherol contents of prickly pear seed oils were determined by high performance liquid chromatography (HPLC). beta-Tocopherol contents of oils ranged between 3.9% (Eskioba) and 50.0% (Adana centrum). (C) 2011 Elsevier B.V. All rights reserved.Öğe Lipid evaluation of cultivated and wild carob (Ceratonia siliqua L.) seed oil growing in Turkey(ELSEVIER SCIENCE BV, 2011) Matthaus, Bertrand; Özcan, Mehmet MusaStudies were carried out on the oil content, fatty acids, tocopherols and sterols in the seeds of two carobs (Ceratonia siliqua), cultivated and wild, from Turkey. The oil yields of cultivated and wild carob seeds were established as 1.73 and 1.82% on a dry weight basis, respectively. The main fatty acids in cultivated and wild carob seed oils are linoleic (49.1% and 51.0%), oleic (30.4% and 26.5%), palmitic (10.3% and 12.0%) and stearic (3.5% and 4.6%), respectively. Tocopherols and phytosterols are important constituents of the unsaponifiable fraction of several seed oils. The major tocopherol in both seed oils was gamma-tocopherol. The composition (mg/100 g) was as follows alpha-tocopherol (69.06 and 70.39 mg/100 g), P8 (22.29 and 24.78 mg/100 g), delta-tocopherol (8.70 and 10.66 mg/100 g), beta-tocopherol (2.30 and 1.85 mg/100 g). The total tocopherol contents had 208.45 and 223.14 mg/100 g, respectively. The total content of sterols of both oils were determined as 16400.94 and 30191.55 mg/kg, with beta-sitosterol as the predominant sterol that accounted for more than 70% of the total amount of sterols other sterols, campesterol (5.33-5.32%), stigmasterol (0.58-11.43%) 7-avenasterol (3.45-3.03%), 7-stigmasterol (2.16-2.4%), and chlerosterol (1.33-1.0%) were detected in both carob oils. As a result, the accurate quantification of these analyses has very important applications for the nutrition sciences. (C) 2011 Published by Elsevier B.V.Öğe Oil content, fatty acid composition and tocopherol contents of turpentine (Pistachia terebinthus L.) and stonepine (Pinus pinea L.) nut oils(AGRIMEDIA GMBH, 2015) Matthaus, Bertrand; Özcan, Mehmet Musa; Al Juhaimi, Fahad Y.The oil content, fatty acid composition and tocopherol contents of turpentine and stone pine fruits were determined. The oil contents of turpentine and stone pine fruits changed between 40.27% (P. terebinthus Alanya) and 47.41% (P. terebinthus Hatay Belen) to 53.05% (P. pinea Izmir) and 46.59% (P. pinea Mersin). The most abundant fatty acids in turpentine fruit oil were palmitic, oleic and linoleic acids. While the contents of oleic acid varied between 34.7% (P. pinea Izmir) and 5o.8% (P. terebinthus Alanya), linoleic acid changed between 18.5% (P. terebinthus Hadim) and 48.3% (P. pinea Izmir). The major tocopherols were a-tocopherol, cc-tocotrienol, V-tocopherol, Y-tocotrienol and Delta-tocotrienol in all varieties of turpentine fruit. cc-Tocopherol contents of oils varied between 3.4 mghoo g (P. pinea Izmir) and 20.7 mg/100 g (P. palestina Taskent). The fatty acid composition of the pine stone seeds oil varied between locations. While linoleic acids in the P. pinea oils are found higher than that of the oleic acids, linoleic acid contents of P. terebinthus fruit oils were reported low. Linoleic acid contents of Stone pine (P. pinea Izmir) were established as 48.3% and 45.1%, respectively. Current study exhibited to be a potential source of valuable oil which might be used for edible and other industrial applications.Öğe Oil content, fatty acid composition and tocopherol contents of turpentine (Pistachio terebinth us L.) and stonepine (Pinus pinea L) nut oils(Agrimedia, 2015) Matthaus, Bertrand; Özcan, Mehmet Musa; Al Juhaimi, Fahad Y.The oil content, fatty acid composition and tocopherol contents of turpentine and stone pine fruits were determined. The oil contents of turpentine and stone pine fruits changed between 40.27% (P. terebinthus Alanya) and 47.41% (P. terebinthus Hatay Belen) to 53.05% (P. pinea Izmir) and 46.59% (P. pinea Mersin). The most abundant fatty acids in turpentine fruit oil were palmitic, oleic and linoleic acids. While the contents of oleic acid varied between 34.7 % (P. pinea Izmir) and 50.8% (P. terebinthus Alanya), linoleic acid changed between 18.5% (P. terebinthus Hadim) and 48.3% (P. pinea Izmir). The major tocopherols were ?-tocopherol, ?-tocotrienol, ¥-tocopherol, ¥-tocotrienol and ?-tocotrienol in all varieties of turpentine fruit. ?-Tocopherol contents of oils varied between 3.4 mg/100 g (P. pinea Izmir) and 20.7 mg/100 g (P. palestina Taskent). The fatty acid composition of the pine stone seeds oil varied between locations. While linoleic acids in the P. pinea oils are found higher than that of the oleic acids, linoleic acid contents of P. terebinthus fruit oils were reported low. Linoleic acid contents of Stone pine (P. pinea Izmir) were established as 48.3% and 45.1%, respectively. Current study exhibited to be a potential source of valuable oil which might be used for edible and other industrial applications.Öğe Oil yields, fatty acid compositions and tocopherol contents of grape seed oils from Turkey(2011) Matthaus, Bertrand; Özcan, Mehmet MusaIn the present study, the oil contents, fatty acid composition and tocopherol contents of grape seed and corresponding oils were analyzed by using Gas Chromatograph and High Performance Liquid Chomotography. The results showed that the oil concentration of seeds ranged from 7.9 to 20.1 % Grape seed oils were rich in oleic and linoleic acids, ranging from 12.9 to 27.1 % and 58.3 to 74.8 %, respectively. In addition, A few types of tocopherols were found in grape seed oils in various amount: ?-tocopherol, ?-tocotrienol, ?-tocopherol, ?-tocotrienol and ?-tocotrienol. As a result, present study shows that oil, fatty acid composition and tocopherol contents differ significantly among the cultivars.Öğe The physico-chemical properties of some citrus seeds and seed oils(WALTER DE GRUYTER GMBH, 2016) Al Juhaimi, Fahad; Matthaus, Bertrand; Özcan, Mehmet Musa; Ghafoor, KashifThe chemical properties, mineral contents, fatty acid and tocopherol contents of seed and seed oils of some citrus genus provided from several locations in Turkey and Saudi Arabia were determined. While Ca contents of seeds were between 5018 mg/kg (Kutdiken lemon) and 7619 mg/kg (-kinnow mandarin), K contents of seeds varied between 7007 mg/kg (Orlando orange) and 10334 mg/kg (kinnow mandarin). Glucose and fructose contents of citrus seed samples varied between 3.75 g/kg and 5.75 g/kg, and 4.09 g/kg and 6.03 g/kg. Palmitic, oleic and linoleic acids were established as dominant fatty acids. Palmitic, oleic and linoleic acid contents of citrus seed oils varied between 19.6% (Kutdiken lemon) and 26.2% (pineapple orange), 21.3% (kinnow mandarin) and 31.4% (Kutdiken lemon) and 32.3% (Kutdiken lemon) and 43.7% (kinnow mandarin), respectively. The total amount of tocopherols of Turkish citrus oil varied between 0.5 mg/100 g (Fremont mandarin) and 18.8 mg/100 g (bitter orange).Öğe Quantitation of fatty acids, sterols, and tocopherols in turpentine (Pistacia terebinthus Chia) growing wild in Turkey(AMER CHEMICAL SOC, 2006) Matthaus, Bertrand; Özcan, Mehmet MusaThe chemical composition (fatty acids, tocopherols, and sterols) of the oil from 14 samples of turpentine (Pistacia terebinthus L.) fruits is presented in this study. The oil content of the samples varied in a relatively small range between 38.4 g/100 g and 45.1 g/100 g. The dominating fatty acid of the oil is oleic acid, which accounted for 43.0 to 51.3% of the total fatty acids. The total content of vitamin E active compounds in the oils ranged between 396.8 and 517.7 mg/kg. The predominant isomers were alpha- and gamma-tocopherol, with approximate equal amounts between about 110 and 150 mg/kg. The seed oil of P. terebinthus also contained different tocotrienols, with gamma-tocotrienol as the dominate compound of this group, which amounted to between 79 and 114 mg/kg. The total content of sterols of the oils was determined to be between 1341.3 and 1802.5 mg/kg, with beta-sitosterol as the predominent sterol that accounted for more than 80% of the total amount of sterols. Other sterols in noteworthy amounts were campesterol, Delta 5-avenasterol, and stigmasterol, which came to about 3-5% of the total sterols.Öğe Some physico-chemical properties and composition in wild olive (Olea europaea L. subsp. oleaster) fruit and oil(Stazione Sperimentale per le Industrie, 2014) Matthaus, Bertrand; Özcan, Mehmet Musa; Al Juhaimi, Fahad Y.In this study, some physico-chemical properties and composition in wild olive fruit and oil were determined. The fatty acid compositions of wild olive oils were determined using GC. Generally, oil contents of both samples were found to be 27.3 and 31.6% in the Mersin (Büyükeceli) and Antalya (Geyikbayir) locations, respectively in Turkey. Free fatty acid (0.9-1.2% oleic acid), peroxide value (12.7-10.4 meq O2/kg oil), total phenol (27.8-32.4 mg/kg) and specific gravity (0.927-0.931 g/cm3) of wild olive oils provided from Mersin (Büyükeceli) and Antalya (Geyikbayir) provinces were established, respectively. Oleic acid (67.8-58.9%) was presented as the highest concentration followed by linoleic acid (7- 17%), palmitic (15.6-15.2%) and stearic acids (2.9-3.0%) in Mersin (Büyükeceli) and Antalya (Geyikbayir) wild olive oils, respectively. Tocopherol analyses by HPLC revealed the presence of ?, ? and ?-tocopherols in both the olive oil samples studied. Tocopherol contents of both samples changed between 34.2-27.6 mg/kg ?-tocopherol, 0.0-0.3 mg/kg ?-tocopherol and 0.5-0.7 mg/kg ?-tocopherol.Öğe Some rape/canola seed oils: fatty acid composition and tocopherols(WALTER DE GRUYTER GMBH, 2016) Matthaus, Bertrand; Özcan, Mehmet Musa; Al Juhaimi, FahadSeed samples of some rape and canola cultivars were analysed for oil content, fatty acid and tocopherol profiles. Gas liquid chromotography and high performance liquid chromotography were used for fatty acid and tocopherol analysis, respectively. The oil contents of rape and canola seeds varied between 30.6% and 48.3% of the dry weight (p < 0.05). The oil contents of rapeseeds were found to be high compared with canola seed oils. The main fatty acids in the oils are oleic (56.80-64.92%), linoleic (17.11-20.92%) and palmitic (4.18-5.01%) acids. A few types of tocopherols were found in rape and canola oils in various amounts: alpha-tocopherol, gamma-tocopherol, delta-tocopherol, beta-tocopherol and alpha-tocotrienol. The major tocopherol in the seed oils of rape and canola cultivars were alpha-tocopherol (13.22-40.01%) and gamma-tocopherol (33.64-51.53%) accompanied by alpha-T3 (0.0-1.34%) and delta-tocopherol (0.25-1.86%) (p < 0.05). As a result, the present study shows that oil, fatty acid and tocopherol contents differ significantly among the cultivars.
