scholarly journals Identification of antioxidant components of Gayo Arabica Coffee Cascara using the GC-MS method

2022 ◽  
Vol 956 (1) ◽  
pp. 012011
Author(s):  
W Lestari ◽  
K Hasballah ◽  
M Y Listiawan ◽  
S Sofia
Keyword(s):  
Antioxidant Activity ◽  
The Other ◽  
Natural Source ◽  
Natural Antioxidant ◽  
Special Focus ◽  
Arabica Coffee ◽  
Coffee Husk ◽  
Dry Process ◽  
Wet Process ◽  
Coffee Arabica

Abstract Approximately half of the coffee will become by-product in coffee processing. This by-product needs a special focus because of its content can be pollutant for nature. One of the coffee by product that underutilized is cascara, composed by pulp and husk. The major by-product of dry process is husk whereas pulp is the major by-product from wet process. Nowadays, there are various ways to utilize coffee by-product. Previous studies have shown that coffee has a potent antioxidant activity which can be a solution in dermatology problem. This research aims to identify the antioxidant component of coffee arabica husk and pulp of Gayo, Aceh Tengah, Aceh using GC-MS method. One of the compounds that identified in both coffee husk and pulp is caffeine. Caffeine is a potential natural antioxidant and it also has anticellulite effect to skin. The other compounds found in coffee husk and pulp also have benefit in dermatology. We conclude that coffee arabica husk and pulp can be a potential natural source to eradicate dermatologic problem.

scholarly journals Added Value Improvement on Arabica Coffee Wet Process MethodUsing Model Kemitraan Bermediasi (Motramed) on Unit Pengolahan Hasil at Ngada Residence - NTT

2009 ◽  
Vol 25 (1) ◽  
Author(s):  
Djoko Soemarno ◽  
Surip Mawardi ◽  
Maspur Maspur ◽  
Henik Prayuginingsih
Keyword(s):  
Cost Efficiency ◽  
Taste Quality ◽  
The Other ◽  
Added Value ◽  
Arabica Coffee ◽  
Is Implementation ◽  
Wet Process ◽  
Coffee Beans ◽  
Quality Grade ◽  
Sample Test

Ngada Residence is main producen region Arabica coffee in Nusa Tenggara Timur province. There are scattered on district of Bajawa and Golewa, that all of them effort by farmers and low quality, so farmers get low price and coffee development slowly than other coffee region in Indonesia. But, on the other hand, Arabica coffee from this region have potential special taste to be export quality coffee beans. One of way to solve to develop this quality is implementation coffee processing by Wet Process methode and support marketing system better by Model Kemitraan Bermediasi (Motramed). This research started from June until October 2007 at two centre district of Arabica coffee, there are district Bajawa are UPH Fa Masa on Beiwali village, UPH Wonga Wali on Susu village, UPH Papa Taki on Bomari village, UPH Suka Maju on Ubedolumolo village and Kecamatan Golewa are UPH Papa Wiu on Mangulewa village, UPH Meza Mogo on Rakateda II village and UPH Ate Riji on Were I village. This research want to know added value, cost efficiency, and profit on Arabica coffee processing used wet process methode on Unit Pengolahan Hasil (UPH) at Ngada Residence. Data was analysed by approximation added value, R-C Ratio analisys and t-One Sample Test. The result showed that Arabica coffee wet process could improved phisic and taste quality, lower of beans size, higher quality grade, smaller defect beans, moisture content lower, had special taste and very few taste defect. Those quality improvement improved price market to be higher, the added value about Rp4,390,- per kg and improved profit for farmers.Key words : Arabica coffee, wet process, quality, added value, efisiency, revenue.

The Effects of Solvents and Extraction Methods on the Antioxidant Activity of P. niruri

2014 ◽  
Vol 68 (5) ◽  
Author(s):  
Hafizah Mohd Hadzri ◽  
Mohd Azizi Che Yunus ◽  
Salman Zhari ◽  
Fahim Rithwan
Keyword(s):  
Antioxidant Activity ◽  
Extraction Method ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Soxhlet Extraction ◽  
Solvent Polarity ◽  
Extraction Methods ◽  
The Other ◽  
Natural Antioxidant ◽  
Total Phenolic

The effects of different types of solvents and extraction method were investigated to determine the presence of antioxidant contents and activity from the P. niruri plant. The aim of this study is to determine which extraction method will give higher natural antioxidant contents and antioxidant activity. The content of natural antioxidant and antioxidant activity were analysed by total phenolic content (TPC), total flavonoid content (TFC) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging activity assay. The results showed that extracts from a supercritical fluid extraction (SFE) method without the addition of modifier showed the highest content of total phenolic (187.66 mg GAE/ g) and flavonoid (1100.93 mg QE/g) in P. niruri compared to the other methods of extraction with different type of solvents. The extract of P. niruri from different extraction methods showed antioxidant activity on DPPH radical scavenging assay. The soxhlet extraction method by methanol showed the lowest IC50 compared to the other methods of extraction. The results revealed that P. niruri extracts had different content of antioxidant and antioxidant activity. The solvent polarity and different methods of extraction play significant roles in determining the most suitable method for production of antioxidant contents and antioxidant activity from P. niruri extracts.

scholarly journals Influence of Solar Radiation and Wet Processing on the Final Quality of Arabica Coffee

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Lucas Louzada Pereira ◽  
Rogério Carvalho Guarçoni ◽  
Wilton Soares Cardoso ◽  
Renato Côrrea Taques ◽  
Taís Rizzo Moreira ◽  
...  
Keyword(s):  
Solar Radiation ◽  
The State ◽  
The Other ◽  
Altitude Range ◽  
Processing Methods ◽  
Arabica Coffee ◽  
Wet Process ◽  
Wet Processing ◽  
Coffee Cultivation

The coffee growing in the state of Espírito Santo has some peculiarities that differ from the other regions producing Arabica coffee in Brazil because it has a diversity of edaphoclimatic conditions that influence the final quality of the bean. This study aimed to demonstrate and quantify the effect of solar radiation and of different forms of wet process on the final quality of Arabica coffee in crops located in the altitude range of 950 meters, in order to understand what would be the best wet processing methods for the coffee cultivated to the East (sun-grown) and coffee cultivated to the South-Southeast (shade-grown). The results indicate that shading has a significant effect on the final quality of the Arabica coffee, as well as the type of wet process used to process the beans after harvest. Therefore, there is a need to study in depth the factors related to the processing, edaphoclimatic, and relief conditions inherent to mountain coffee cultivation.

scholarly journals Purification, structure and anti-oxidation of polysaccharides from the fruit of Nitraria tangutorum Bobr.

RSC Advances ◽  
2018 ◽  
Vol 8 (21) ◽  
pp. 11731-11743 ◽  
Author(s):  
Baotang Zhao ◽  
Jing Liu ◽  
Xin Chen ◽  
Ji Zhang ◽  
Junlong Wang
Keyword(s):  
Antioxidant Activity ◽  
Food Industry ◽  
Natural Antioxidant ◽  
Nitraria Tangutorum ◽  
Good Potential

Antioxidant activity of NTWP-II, evaluated in vitro, indicates that NTWP-II has good potential as a natural antioxidant used in the food industry.

Nutrition

1932 ◽  
Vol 5 (1-2) ◽  
pp. 25-35
Keyword(s):  
Fatty Acids ◽  
The Netherlands ◽  
Free Fatty Acids ◽  
Intrinsic Value ◽  
Extraction Process ◽  
Dry Process ◽  
Wet Process ◽  
Advantages And Disadvantages ◽  
Tijdschrift Voor ◽  
Feeding Value

The Preparation of Meat-scraps. Meat-scraps Problems. De Bereiding van Diermeel. Diermeelproblemen. Dr. B. J. C. te Hennepe. Tijdschrift voor Diergeneeskunde, 1931, p. 918.The author describes three different processes for the preparation of meatscraps used in the Netherlands, pointing out their advantages and disadvantages. (1) The wet process, (2) The dry process, (3) The extraction process by means of Benzin. A summary of the economical results obtained is being given. The author points further out, that according to his opinion the question, as to how far the intrinsic value of free fatty acids influences the feeding value of the meal, especially as regards chicken food, is quite entitled.

Mechanochemical Treatment of Quercetin and Curcumin to Obtain Eutectic Mixtures with High Antioxidant Activity

CrystEngComm ◽  
2021 ◽  
Author(s):  
Richard Fernando D'Vries ◽  
Valentina Renza-Diaz ◽  
Martin emilio Gonzalez ◽  
Kriss Dayhana Pantoja
Keyword(s):  
Antioxidant Activity ◽  
Free Radicals ◽  
Biological Systems ◽  
Mechanochemical Treatment ◽  
Natural Antioxidant ◽  
Eutectic Mixtures ◽  
High Antioxidant Activity ◽  
The Creation

Quercetin and curcumin are well-known natural antioxidant molecules used to prevent the malignant effect caused by free radicals on biological systems. This work addressed the creation of eutectic mixtures from...

Infrastructure deficit and financing needs in Africa

2017 ◽  
Author(s):  
Mthuli Ncube
Keyword(s):  
The Other ◽  
Special Focus ◽  
Local Market ◽  
Infrastructure Development ◽  
Development Bank ◽  
African Development ◽  
Local Sources ◽  
Infrastructure Finance ◽  
African Development Bank

There is a consensus that Africa has a huge infrastructure deficit. An urgent question demanding our attention therefore is: what are the levels of access to sources of local market finance for infrastructure development in Africa? It brings to our attention the state of infrastructure access in the continent with a special focus on constraints to infrastructure development in Africa. The Chapter then discusses innovative local sources of infrastructure finance in the continent alongside some of the constraints and solutions to a major source that the African Development Bank has emphasized lately—infrastructure bond. The other question to be answered therefore is: given the constraints and opportunities, what is the role of the African Development Bank?

scholarly journals Antioxidant Activity of Averrhoa bilimbi Linn. Leaves Extract Using Two Different Types of Solvents

2021 ◽  
Author(s):  
Raja Nurul Ashiqin Raja Arifin ◽  
Juliana Jumal
Keyword(s):  
Antioxidant Activity ◽  
Gallic Acid ◽  
Skin Diseases ◽  
Water Extract ◽  
Ethanolic Extract ◽  
Natural Antioxidant ◽  
Aluminium Chloride ◽  
Total Phenolic ◽  
Different Types ◽  
Gallic Acid Equivalent

Exposed to the pollution has led to generation of reactive oxygen species (ROS) in human skin. ROS generated cause many skin diseases such as skin-aging, inflammation, melanogenesis and skin cancer. ROS is a family of oxygen-based free radicals that contains or capable of producing an unpaired electron. Antioxidant is a molecule that can inhibit the reaction of free radical from ROS by donating its electron. Averrhoa bilimbi Linn. (AVBL) is one of the potent natural antioxidant belongs to the group of Oxalidaceae which can be widely found in Asia including Malaysia. Traditionally, this plant has been used to treat many diseases such as cough, itchiness, pimple, fever and inflammation. As a result, much attention has been directed towards the studies regarding the potential of this plant in treating disease. The present study was undertaken to assess the antioxidant activity of AVBL leaves extract. The AVBL leaves were extracted using sonicator with ethanol and distilled water as two different types of solvent. The total phenolic content (TPC) and flavonoid content (TFC) of this study were determined by using Folin-Ciocalteu reagent and aluminium chloride colometric assay. Antioxidant activity of the plant extract was tested using 2,2- diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing power (FRAP). From the analyses, water extract of AVBL possessed greater extraction yield (11.231%) as compared to ethanolic extract (5.358 %). However, ethanolic extract of AVBL leaves revealed higher result of TPC (126.4±0.35 mg/g gallic acid equivalent), TFC (32.80±0.37 mg/g quercetin equivalent), DPPH (0.0019±0.0003) and FRAP (41.81±0.45 mg/g gallic acid equivalent). The results of TPC and TFC have strongly positive correlation with antioxidant capacity (r = 1). Thus, it can be concluded that this plant is a potent source of natural antioxidant.

scholarly journals The UV-Vis Study On Anthocyanin Pigments Activities Extracted From Gayo Arabika Coffee Husks

Elkawnie ◽  
2019 ◽  
Vol 5 (2) ◽  
pp. 147
Author(s):  
Hasby Hasby ◽  
Nurhafidhah Nurhafidhah ◽  
Said Ali Akbar
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Absorption Peak ◽  
Solution Temperature ◽  
Arabica Coffee ◽  
Coffee Husk ◽  
Long Term Stability ◽  
Acidic Conditions ◽  
Anthocyanin Pigments

The anthocyanin activity of Gayo Arabica coffee husk in variations in acid solution, temperature, and pH has been assessed through UV-Vis studies. It is important to optimize these factors to increase the long-term stability of anthocyanins for use in various fields. Gayo Arabica coffee husks was extracted through maceration method with methanol. This process obtained a coffee husks extract of 1.176 mg/μL. The UV-Vis spectrum of the extract displayed the major absorption peak at λmax= 529 nm in hydrochloric acid (HCl), this assigned by the electronic transition from flavylium as the particular characteristic of anthocyanin compounds. The anthocyanin from the extract was stable at temperatures of 35oC and 50oC, to have a major absorption peak at λmax= 529 nm. Therefore, it could probably be said that the lower the temperature, the higher the absorbance value of anthocyanin. Then, husks extract was getting red at pH 1 and 3; almost colorless at pH 5, 8 and 10; and yellow at pH 12. The more acidic conditions causes more anthocyanin pigments to be observed in the form of flavylium or oxonium cations color. Finally, Gayo Arabica coffee husks extract can absorb both ultraviolet (UV) and visible light (visible).

scholarly journals Study of antioxidant activity and anti-cholesterol content on red yeast rice with substrates variation (rice, corn and dried cassava)

2011 ◽  
Vol 9 (2) ◽  
pp. 38-44
Author(s):  
HADI WIYOTO ◽  
M. A.M. ANDRIANI ◽  
NUR HER RIYADI PARNANTO
Keyword(s):  
Antioxidant Activity ◽  
Amylose Content ◽  
Cholesterol Content ◽  
The Other ◽  
Red Yeast Rice ◽  
Red Yeast ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Level Of Significance ◽  
High Amylose

Wiyoto H, Andriani MAM, Parnanto NHR. 2011. Study of antioxidant activity and anti-cholesterol content on red yeast rice with substrates variation (rice, corn and dried cassava). Biofarmasi 9: 38-44. Red yeast rice is one of fermented rice product by Monascus purpureus. Traditionally, the substrate used to produce red yeast rice is rice. Usually, the rice with high amylose content is proper to produce red yeast rice than low amylose. The other substrates that be used to produce red yeast rice are corn and dried cassava. The purposes of this research were to determine the effect of substrates variation (rice, corn and dried cassava) on antioxidant activity and anti-cholesterol content in red yeast rice, and to determine the substrate(s) that produce the highest antioxidant activity and anticholesterol content. The design of this research was a Completely Randomized Design with one factor, i.e. the kind of substrates: rice, corn and dried cassava, with three replications. Then, the data were analyzed with ANOVA at a level of significance α=0.05, and continued with DMRT at the same level. This results showed that the effect of substrates kind to antioxidant activity and anti-cholesterol content on red yeast rice. The rice substrate had higher antioxidant activity and anti-cholesterol content than corn and dried cassava substrates. The antioxidant activity and the anti-cholesterol content on red yeast rice from rice substrate were 45.6100% and 0.026600%, respectively. The antioxidant activity and the anti-cholesterol content on red yeast rice from corn substrate were 44.0500% and 0.022833%, respectively, while the antioxidant activity and the anti-cholesterol content on red yeast rice from dried cassava substrate were 42.8333% and 0.013200%, respectively.

Sign in / Sign up

Export Citation Format

Share Document