scholarly journals Olive Trees By-Products as Sources of Bioactive and Other Industrially Useful Compounds: A Systematic Review

Molecules ◽  
2021 ◽  
Vol 26 (16) ◽  
pp. 5081
Author(s):  
Valentina Lo Giudice ◽  
Immacolata Faraone ◽  
Maria Roberta Bruno ◽  
Maria Ponticelli ◽  
Fabiana Labanca ◽  
...  
Keyword(s):  
Systematic Review ◽  
Energy Production ◽  
Animal Feed ◽  
Huge Amount ◽  
Promising Candidate ◽  
Modern Agriculture ◽  
Cellulose Pulp ◽  
Olive Trees ◽  
Fuel Source ◽  
By Products

The need to produce an ever-increasing quantity of material products and food resulting from the planet globalization process has contributed to the spread of modern agriculture based on a linear production resulting in the generation of tons of waste. This huge amount of waste is generally accumulated in landfills, causing different environmental problems. Hence, researchers moved on to study the processes used to recover agro-industrial by-products within a circular and sustainable bio-economy concept. A systematic quest on Scopus and PubMed databases was performed to identify the data available to date on recycling agro-industrial by-products of Olea europaea L. This systematic review summarizes the knowledge regarding the use of olive trees by-products for producing animal feed, biocomposites, bioethanol, cellulose pulp, activated carbon, and as a fuel source for energy production. Furthermore, the data regarding the potential biological activity of extracts from olive roots, wood, bark, and pruning were analyzed. Olive trees by-products are, indeed, rich in molecules with antioxidant, antimicrobial, cardioprotective, and anticancer activity, representing a promising candidate for treat several human diseases.

scholarly journals Composition of Saffron By-products (Crocus sativus) in Relation to Utilization as Animal Feed

2021 ◽  
Author(s):  
Si Mohamed Jadouali ◽  
Hajar Atifi ◽  
Rachid Mamouni ◽  
Khalid Majourhat ◽  
Zakia Bouzoubaa ◽  
...  
Keyword(s):  
Palmitic Acid ◽  
Animal Feed ◽  
Crocus Sativus ◽  
Feed Supplement ◽  
Huge Amount ◽  
Potential Source ◽  
Total Carbohydrates ◽  
Dry Seasons ◽  
By Products ◽  
Wet And Dry Seasons

Background: In the region of Taliouine-Taznakhte, the saffron culture constitutes the pivot of the agriculture. Nevertheless, a huge amount of saffron by-products with little or no commercial value are wasted during the processing of the stigmas. To increase the overall profitability of this crop, these by-products have been investigated as a potential source of nutrition. Methods: The different parts of Crocus sativus were analyzed. The leaves have high crude fibers (19, 31%), proteins (7, 24%), lipids (6, 10%), N (1, 15%), Fe (985, 59 mg/kg). The petals are the flower parts with the highest contents of crude fiber (11, 25%), ash (7, 30%), protein (6, 35%) and total carbohydrates (71, 16%). Corms have high total carbohydrates (92,41%). The fatty acids in cyclohexane extract oils from leaves were palmitic acid (21.68%) and linolenic acid (25.09%) while in the petals, palmitic acid (11.64%) and linoleic acid (22.60%). Result: From the result obtained, it is suggested that some of the by-products of Moroccan saffron could be utilized by ruminants as feed supplement during both wet and dry seasons.

scholarly journals Analytical Characterization of Water-Soluble Constituents in Olive-Derived By-Products

Foods ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1299
Author(s):  
Pablo Doménech ◽  
Aleta Duque ◽  
Isabel Higueras ◽  
José Luis Fernández ◽  
Paloma Manzanares
Keyword(s):  
Olive Tree ◽  
Mediterranean Area ◽  
Water Soluble ◽  
Olive Pomace ◽  
Olive Leaves ◽  
Olive Stone ◽  
Olive Trees ◽  
Tree Pruning ◽  
By Products

Olive trees constitute one of the largest agroindustries in the Mediterranean area, and their cultivation generates a diverse pool of biomass by-products such as olive tree pruning (OTP), olive leaves (OL), olive stone (OS), and extracted olive pomace (EOP). These lignocellulosic materials have varying compositions and potential utilization strategies within a biorefinery context. The aim of this work was to carry out an integral analysis of the aqueous extractives fraction of these biomasses. Several analytical methods were applied in order to fully characterize this fraction to varying extents: a mass closure of >80% was reached for EOP, >76% for OTP, >65% for OS, and >52% for OL. Among the compounds detected, xylooligosaccharides, mannitol, 3,4-dihydroxyphenylglycol, and hydroxytyrosol were noted as potential enhancers of the valorization of said by-products. The extraction of these compounds is expected to be more favorable for OTP, OL, and EOP, given their high extractives content, and is compatible with other utilization strategies such as the bioconversion of the lignocellulosic fraction into biofuels and bioproducts.

scholarly journals The Potential Utilization of High-Fiber Agricultural By-Products as Monogastric Animal Feed and Feed Additives: A Review

Animals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 2098
Author(s):  
Wen-Yang Chuang ◽  
Li-Jen Lin ◽  
Hsin-Der Shih ◽  
Yih-Min Shy ◽  
Shang-Chang Chang ◽  
...  
Keyword(s):  
Dietary Fiber ◽  
Animal Feed ◽  
Animal Health ◽  
Feed Additives ◽  
Health It ◽  
High Fiber ◽  
Monogastric Animal ◽  
Animal Growth ◽  
Positive Effect ◽  
By Products

With the increase in world food demand, the output of agricultural by-products has also increased. Agricultural by-products not only contain more than 50% dietary fiber but are also rich in functional metabolites such as polyphenol (including flavonoids), that can promote animal health. The utilization of dietary fibers is closely related to their types and characteristics. Contrary to the traditional cognition that dietary fiber reduces animal growth, it can promote animal growth and maintain intestinal health, and even improve meat quality when added in moderate amounts. In addition, pre-fermenting fiber with probiotics or enzymes in a controlled environment can increase dietary fiber availability. Although the use of fiber has a positive effect on animal health, it is still necessary to pay attention to mycotoxin contamination. In summary, this report collates the fiber characteristics of agricultural by-products and their effects on animal health and evaluates the utilization value of agricultural by-products.

Effects of Dietary Level of Rice Distiller’s Dried Grains on Performance and Meat Quality of Chickens

2021 ◽  
Author(s):  
P.K. Dang ◽  
N.T.P. Giang ◽  
T.T. Nguyen ◽  
S. Chu-Ky ◽  
N.C. Oanh ◽  
...  
Keyword(s):  
Meat Quality ◽  
Broiler Chickens ◽  
Animal Feed ◽  
Raw Materials ◽  
Control Diet ◽  
Broiler Chicks ◽  
Meat Yield ◽  
Broiler Performance ◽  
National University ◽  
By Products

Background: In Vietnam, animal feed mainly depends on imported raw materials, while available agro-industrial by-products are often released into the environment and only a its unsubstantial portion used as an animal feed. Therefore, efficient use of these by-products as animal feed is essential. This work aimed to evaluate the effect of dietary levels of rice distiller’s dried grain (Rice DDG) on broiler performance, meat yield and meat quality. Methods: The research was conducted at the experimental station, Vietnam National University of Agriculture, Vietnam, from May to September 2020. A total of 240 a day-old broiler chicks were randomly assigned into 4 groups with 3 replications to receive 4 diets with different levels of RDDG at 0, 5, 8 and 10% for 14 weeks. Growth, meat yield and meat quality were estimated. Result: ADG was higher in broiler chickens fed diets with rice DDG compared to that in control diet at 12 and 14 weeks (P less than 0.05) while ADFI and FCR were not affected by the diets. There were significantly no differences in meat yield and quality among the diets. In conclusion, rice DDG could be used to partially replace main ingredients in chicken diets.

scholarly journals Estimation of the vine-shoot yield in the Gyöngyös district

2013 ◽  
pp. 21-26
Author(s):  
Cecília Gonda
Keyword(s):  
Accurate Data ◽  
Heating Value ◽  
Biomass Resource ◽  
Fuel Source ◽  
By Products

Every year, a significant amount of vineyard prunings is generated in Hungary. Instead of utilization them, it is burned directly on the field in spite of the limitations of legalization highly pollute the environment in recent decades. The vineyard pruning itself or with other by-products from pomology and forestry can be significant amount of fuel source. However, before the planning to utilization the essential task is to estimate the potential. This study examine that how many vineyard is generated in the micro-region of Gyöngyös in every year on appointed vineyard. In order to vine-branch potential calculate more accurate data was necessary so the products had to be determined for all plant. Thus, the biomass resource and the utilization become plannable. As the result of the experiment we can estimate that 1,5 t/ha vineyard pruning are generated. It means more than 9 thousand tons pruning in the micro-region of Gyöngyös. This amount can be convert into fuel source more than 150 thousand GJ heating value. The results evince that the vineyard pruning is important fuel source in every year in the micro-region of Gyöngyös. Further usage is suggested for other regions in other size.

scholarly journals Evaluation of Agro-Industrial by Products as Potential Local Feed for Ruminant Animals: Chemical Composition, Fiber Fractions and In Vitro Rumen Fermentation

2019 ◽  
Vol 20 (3) ◽  
pp. 155
Author(s):  
Said Mirza Pratama ◽  
Sitti Wajizah ◽  
Anuraga Jayanegara ◽  
Samadi Samadi
Keyword(s):  
Chemical Composition ◽  
Animal Feed ◽  
Rumen Fermentation ◽  
Coffee Pulp ◽  
Fiber Fractions ◽  
Ruminant Animals ◽  
Coconut Meal ◽  
By Products ◽  
In Vitro Rumen Fermentation

Animals are considered as source of protein should be improved their productivity with the minimum cost production. Agro-industrial by products have been used as animal feed to reduce feed cost. The purpose of this study is to evaluate agro-industrial by product in Aceh as potential local feed for ruminant animals based on chemical composition, fiber fraction and in vitro rumen fermentation. There were eight sources of agro-industrial by products (sago residues, coconut meal, soybean-ketchup by product, coffee pulp, cacao pod, sago tree, corncob, and rice brand) which were collected from 3 different locations in Aceh.  All agro-industrial by product samples were dried at 600C for 24 h and ground to pass a 1 mm sieve. Grounded samples were analyzed to determine chemical composition, fiber fractions and in vitro rumen fermentation. Incubation was conducted at temperature 390C for 48 h in water bath with three replicates. Data for in vitro rumen fermentation were statically calculated by using SPSS differences between treatments were stated (P≤0.05) by using Duncan Multiple Range Test (DMRT). The results indicated that agro industrial by product from coconut meal, ketchup residues, coffee by product, cacao by product, and rice brand can be used as source of protein and industrial by product from sago by product, sago tree and corncob can be used as source of energy. Neutral detergent  insoluble  CP (NDICP) and Acid detergent insoluble CP (ADICP)  were relatively high for sago by product, sago tree and rice brand but relatively low for cacao by product and corncob. The value of incubated pH for most feed samples was in the normal range. In vitro dry matter digestibility (IVDMD) and in vitro organic matter  digestibility (IVOMD) were significantly difference (P≤0.05) each agro-industrial by products with the highest for sago and the lowest for coffee by product. In conclusion, agro-industrial by products had a potential feed for ruminant animals both as protein and energy sources. However, feed ingredients with high fiber content and low degradability, further treatments such as physical, chemical and biological treatments were required to improve the feed quality. 

scholarly journals A Review of Coffee By-Products Including Leaf, Flower, Cherry, Husk, Silver Skin, and Spent Grounds as Novel Foods within the European Union

Foods ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 665 ◽  
Author(s):  
Tizian Klingel ◽  
Jonathan I. Kremer ◽  
Vera Gottstein ◽  
Tabata Rajcic de Rezende ◽  
Steffen Schwarz ◽  
...  
Keyword(s):  
European Union ◽  
Animal Feed ◽  
Safety Data ◽  
Coffee Bean ◽  
Green Coffee ◽  
The European Union ◽  
Spent Coffee Grounds ◽  
Novel Food ◽  
Coffee Grounds ◽  
By Products

The coffee plant Coffea spp. offers much more than the well-known drink made from the roasted coffee bean. During its cultivation and production, a wide variety of by-products are accrued, most of which are currently unused, thermally recycled, or used as animal feed. The aim of this review is to provide an overview of novel coffee products in the food sector and their current legal classification in the European Union (EU). For this purpose, we have reviewed the literature on the composition and safety of coffee flowers, leaves, pulp, husk, parchment, green coffee, silver skin, and spent coffee grounds. Some of these products have a history of consumption in Europe (green coffee), while others have already been used as traditional food in non-EU-member countries (coffee leaves, notification currently pending), or an application for authorization as novel food has already been submitted (husks, flour from spent coffee grounds). For the other products, toxicity and/or safety data appear to be lacking, necessitating further studies to fulfill the requirements of novel food applications.

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