Flavonoids were extracted from Zizyphus spina-christi leaves by Ethyl acetate after acid digested and used as antioxidant. The dried extract was added separately to each sample of fat extracted from hallow cow and sheep bones as follows: T1 cow fat, T2 control for cow fat, T3 sheep fat and T4 control for sheep fat (the control T2 and T4 reffered to samples without added antioxidant).
Samples were stored at -18, 5, 25 and 55 °C for 28 days. The storage trials were conducted at -18, 5 and 25 °C for 28 days for T1, T2, T3 and T4. The chemical indices examined initially and at the end of storage period. PVs was 1.46, 1.46, 1.8 and 1.8 meq/ Kg oil respectively, FFA values were 0.245, 0.245, 0.244 and 0.244% respectively and TBA values were 0.015, 0.015, 0.023 and 0.023 mg malonaldehyde/ Kg oil respectively. The statistical analysis for the obtained results revealed insignificant differences (p< 0.05) among both storage periods and storage temperatures. It was also found that the added antioxidants (Zizyphus leaf) hadn't showed preservative effect on added fat samples.
The storage trial for fat samples were also conducted at 55°C for 28 days. The initial values for PVs were 1.46, 1.46, 1.8 and 1.8 meq/ kg oil respectively and the final values were 3.2, 4.4, 3.6 and 5.4 meq/ kg oil respectively. The FFAs values were initially 0.245, 0.245, 0.244 and 0.244% respectively and the final values were 0.394, 0.507, 0.451 and 0.564% respectively. The TBA values were initially 0.015, 0.015. 0.023 and 0.023 mg malonaldehyde/ kg oil respectively and the final values were 0.02, 0.032, o.o334 and o.o452 mg malonaldehyde/ kg oil respectively. The statistical analysis revealed insignificant differences p< 0.05 among storage periods for both PV and FFA values (except T1 that didn't show significant effect p< 0.05 for FFA) and TBA values. The added antioxidants (Zizyphus leaf) hadn't revealed significant effect on stored oil samples as reflected by obtained results.
Academic libraries characterized from other libraries in the groups of literacy acquired, and
ways to retrieve this information, where it is supposed supply of various combinations of traditional
sources, electronic information, such as books and references, maps and indexes, CD-ROMs and
service-line and so on, via electronic mediator or via the Internet instead of the mediator paper. The
digital technology has changed the way you work by academic libraries, where confined to the
primary mission of these libraries to provide prompt services to the needs of researchers, professors
and students, and the provision of reading different materials, including electronic sources that
support the curriculum and research in el
Quran is a basic reference of production it is as a source to all sciences, Ayat of Quran would mention the importance of benefits of animals. Quran contain full surrat named in animal names as Al-Baqara that is to clarify its benefits and importance in human’s life.
Throughout the ages, a number of natural and human disasters have
occurred in the Islamic world,
اهتمت دول العالم بدول الساحل الإفريقي لمِا عرفته من ثروات معدنية كثيره فيها، وإن دول الساحل الإفريقي تقع في وسط القارة الإفريقية وإنها تمتد من البحر الأحمر أي مطلة على البحر الأحمر مما يجعلها ذات أهمية ملاحية. والذي زاد في أهميتها مواردها الطبيعية إذ أنها ذات موارد اقتصادية متنوعة وكثيرة لا سيما وأنها قليلة الاستهلاك لهذه الموارد فهذا أدى إلى أهتمام الدول التي يكثر استهلاكها لهذه الموارد فيها، ومن هذه الموا
... Show Moreالآت الاطفال الموسيقية الشعبية والتقليدية في التربية
Dans le romantisme et ses textes, il est important de mentionner qu'il n'existe qu'un seul thème romantique qui est l'amour, mais assez pour avoir fait du XIXème siècle, une révolution du texte romantique. L'amour consiste à la réduction de l'univers, à un seul être, puis la dilatation de ce seul être, voilà l'amour. cet amour passionnel n'est qu'un arrangement froid et réfléchi excluant d'emblée l'exaltation des sentiments. Néanmoins, cet amour passionnel peut être brutal. quant à la mort, dans le drame romantique, l'amour et la mort sont liés. Beaucoup d'histoires d'amour finissent le plus souvent par
... Show MoreThis research is an attempt to prove the scientific tendency in the Islamic philosophical heritage through a review of the most important ideas of intellectual and philosophical theories brought by the philosophers of this
تبلور مفهوم مركزية الانسان بالنسبة للإنسان والاعلاء من شأنه و عده قيمه أعلى من الوجود ، هذا الادراك الوجودي هو ما يسمى بالنزعة الانسانية، وتعد النزعة الانسانية هنا احد أهم التيارات التي ظهرت في الفكر السياسي الغربي الحديث، إذ تعد هذه النزعة من أهم الحركات الفكرية والتربوية التي توجت عصر النهضة الاوربي وفجرت ينابيعه الفكرية والاوربية، وعلى الرغم من إن النزعة الانسانية شكلت في عصرها ثورة فكرية شاملة على المن
... Show MoreThe semiotic approach to the unspoken seeks to analyze the text in an esoteric way, that is, to clarify what is hidden from it by reading between