No abstract

Application of cooking oil during thermal processing can influence the nutritional qualities of meat products during consumption. This study determined the effect of frying with sunflower and olive oil on the fatty acid profile of sausage fortified with edible meat waste (EMW) as a fat replacer was evaluated. Fresh beef sausages were formulated in ratios of 30% lean meat (LM) and 70% EMW, 50% LM and 50% EMW, and 90% LM and 10% fat (control) and designated as T1, T2, and T3, respectively. The proximate analysis results revealed significant differences ( P < 0.05 ) in fat, fat free dry matter (FFDM), and moisture contents across the treatment. Fresh beef sausage fortified with 70% EMW had the highest fat contents ( 25.7 ± 0.83 % ) while those fortified with 10% fat (T3) had the highest FFDM ( 55.85 ± 0.57 % ) and moisture content ( 69.15 ± 0.62 ) compared to other treatments. In addition, among individual saturated fatty acids, beef sausage fortified with 50% meat wastes (T1) revealed significantly higher palmitic acid ( 31.06 ± 0.13 ), stearic acid ( 22.52 ± 0.29 ), myristic acid ( 3.84 ± 0.05 ), and lauric acid ( 0.04 ± 0.05 ) and the lowest margaric ( 0.98 ± 0.02 ) contents as compared to treatments T2 and T3. Also, beef sausage containing 10% fat showed the lowest ( P < 0.05 ) saturated fatty acid (SFA) and higher monounsaturated (MUFA), polyunsaturated fatty acid (PUFA), n-6, n-3, PUFA : SFA, PUFA/MUFA, n-6/n-3, and desaturase indexes (DI) compared to treatments T1 and T2. Frying with sunflower oil significantly increased PUFA, n-6, n-6/n-3, and desaturase indexes and lowered SFA, n-3, and PUFA/SFA compared to frying with olive oil. In relation to raw beef sausage, frying with oil substantially increased the amount of MUFA, PUFA, n-6, and PUFA/SFA but reduced SFA content across the treatments.

The need to increase the use of renewable biomasses for energy supply, such as fuel pellets is significant. However, different types of biomasses have different mechanical properties to be pelletized, which entails a limitation in available raw materials for pellet producers. Within this study eleven different pure substances from biomasses were separately mixed with European beech and Scots pine, to identify its impact on the densification process. Beech and pine pellets were used as control materials against their corresponding pellets mixed with substances representing: cellulose, hemicelluloses, other polysaccharides, lignin, protein, and extractives. The mechanical properties were investigated as well as FT-IR and SEM analyses on the pellets. The results showed that the addition of the substances xylan and galactan created the hardest pellets for both pine and beech and that adding extractives to wood affects pine more than beech in relation to hardness. The FT-IR data could not provide clear explanations as to the variation in hardness and springback behavior through the identification of major functional groups in each pellet. It can be concluded that biomass residues rich in xylan and galactan increase pellet quality in terms of strength and durability without affecting the production process.

Parkia biglobosa (Jacq.) R. Br. ex G. Don, popularly known as the African locust bean tree, is a perennial tree legume that belongs to Mimosoïdeae sub-family and family of Fabaceae. This study is aimed at reviewing the botany, nutritional uses, phytochemical and pharmacological properties of P. biglobosa and the information was undertaken using electronic databases such as Scopus, Google Scholar, Elsevier, Science Direct, Web of Science, Pubmed, SciFinder, BMC and Open-thesis. Parkia biglobosa is a very important multipurpose tree that is used essentially for food, medicinal, cultural, economic and magico-therapeutic purposes. Due to its socio-economic and cultural importance, P. biglobosa species are vulnerable to unsustainable harvesting and are declining in numbers because they remain semi- or undomesticated in some west Africa countries. Different aqueous and organic extracts of P. biglobosa indicate that the species are rich in saponins, tannins, flavonoids, resins, carbohydrates, terpenoids, phenols, sterols, and cardiac glycosides. The nutritional and pharmacological benefits of P. biglobosa has been associated with its physicochemical properties. Pharmacological studies on P. biglobosa exhibited antimalarial, anti-helminthic, antibacterial, antidiabetic, antihypertensive, anti-inflammatory, analgesic, anti-carcinogenic, anti-trypanosomic activities and antioxidant properties. Threats to the survival of this multipurpose species are also highlighted.

No abstract