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A Comparison of Myrosinase Activity and Stability in Fresh Broccoli (B. oleracea var. Italica) and Brown Mustard (B. juncea) Seeds Full text
2020
Olukayode Adediran Okunade | Lisa Methven | Keshavan Niranjan
The effects of temperature and pressure processing on myrosinase extracted from fresh broccoli and brown mustard seed was studied. Brown mustard seeds had higher myrosinase activity (2.75 un/mL) than fresh broccoli (0.58 un/mL). The extent of enzyme inactivation increased with pressure (200-800 MPa) and temperature (30-80°C) for both brown mustard seeds and fresh broccoli myrosinase. However, at combinations of lower pressures (200-400 MPa) and temperatures (30-80°C), there was less myrosinase inactivation. When processing at a pressure of 300 MPa with a temperature of 70°C for 10 minutes, there was 65% myrosinase activity for brown mustard while at 300 MPa and 60°C, activity retention in fresh broccoli was 30%. Whereas, the corresponding activity retentions when applying only heat (70°C for 10 minutes) was 35% for brown mustard myrosinase, while there was no measurable myrosinase activity for fresh broccoli (60°C, 10 minutes). Thus, application of moderate pressures (200-400 MPa) on brown mustard and fresh broccoli can potentially be used to retain myrosinase activity needed for subsequent glucosinolate hydrolysis.
Show more [+] Less [-]Role of Plant Growth Promoting Bacteria (PGPR) in Plant Growth and Development: Soil-Plant Relationship Full text
2020
Nuriye Meraklı | Abdulrezzak Memon
Plant growth-promoting rhizobacteria (PGPR) is a beneficial group of free-living soil bacteria that colonize the rhizosphere and are helpful in root growth and development. PGPR plays an important role in plant growth through the production of phytohormones, solubilization of inorganic phosphate, increased iron nutrition via iron-chelating siderophores and volatile compounds that affect the plant metabolism and signalling pathways. Additionally, PGPR shows synergistic and antagonistic interactions with rhizosphere microorganisms and soil which indirectly improve and enhance plant growth rate. Various environmental factors affect the PGPR growth and proliferation in the plants. There are several shortcomings and limitation in the PGPR research which can be addressed through the use of modern approaches and techniques by exploring multidisciplinary research which combines applications in microbiology, biotechnology, nanotechnology, agro-biotechnology, and chemical engineering. Furthermore, PGPR is also known to reduce the emission of greenhouse gases (GHGs), carbon footprint, and also increase the nutrient-use efficiency. Here we describe the importance of PGPR in sustainable agriculture and their role in plant growth and development.
Show more [+] Less [-]Recovery of Bioactive Peptides from Food Wastes and Their Bioavailability Properties Full text
2020
Ahmet Görgüç | Esra Gençdağ | Fatih Mehmet Yılmaz
Global urbanization and population growth obstruct the food waste management and cause uncontrolled accumulation of wastes. Ensuring the correct and efficient use and recycling of wastes having high protein content and generated throughout the food production and supply chain is becoming more important both in our country and all over the world. The evaluation of by-products released in the food industry is important for the development of new functional products and for greater economic rate of return on industrial scale. In this respect, bioactive peptides obtained from plant/animal wastes and rich in protein come into prominence. Bioactive peptides are also of great importance for human health because of their functional properties. In this review, functional properties of bioactive peptides obtained from protein-rich food wastes and their bioavailability mechanisms in human gastrointestinal system are discussed.
Show more [+] Less [-]Congridae (Teleostei: Anguilliformes) Family Species of Distributing in the Turkish Seas and Their General Features Full text
2020
Büşra Ulu | Bahar Bayhan
The species of the Congridae family belonging to the Anguilliformes order are known as conger eel, and are morphologically similar to the eels which are among the species of the Anguillidae family. In both family species, the dorsal and anal fins are combined with the caudal fin. It is easily distinguished from eel species by the appearance of dorsal fin rays at a closer level to the head. There are 195 species belonging to 30 genus distributed in the world seas belonging to the Congridae family. A third genus of 3 species [Ariosoma balearicum (Delaroche, 1809), Gnathophis mystax (Delaroche, 1809) and Conger conger (Linnaeus, 1758)] shows the distribution of Turkish seas. While the first two species have distributed only Turkey's Aegean and Mediterranean seas, C. conger shows the distribution of all our seas. In this review, where morphological and biological characteristics of European conger are distributed in our country, all studies carried out both in our country and abroad are examined in detail and presented together. With this compilation study, especially biological information about species is missing in our country and attention has been made to contribute to the literature.
Show more [+] Less [-]In Turkey, The Relationship of Agricultural Sector and Economic Variables: Panel Cointegration Analysis Full text
2020
Ayşe Esra Peker
That agricultural sector is examined closer from every point of view and is restructured in complied with the requirements of the age has to be structured comes to our face as a reality any longer accepted by every sector of the society. The various developments experienced in the world in the recent years have directly or indirectly affected agricultural sector. In the economy of Turkey, one of the countries attracting attention with its rapidly growing, there are many theoretical studies dealing with the direct or indirect contribution of agricultural sector. However, it is necessary to increase the number of the applied studies introducing the existing situation of the sector and enabling to develop the effective policies for the sector. For, it is highly important for the theories put forward in theoretical framework to be supported by empirical analyses in terms of forming effective policy suggestions. In the study, the three sub-sectors were considered such as the subsectors of cereal, legume, and fruit-vegetable and the existing situation of the sector was analyzed by moving from the macro variables. In order to identify the effects of macroeconomic variables (inflation, exchange rate, interest, monetary supply), selected in the direction of the aim of the study, panel cointegration test was utilized. Setting off from this point, when the analysis made in the study is examined for all sectors, it was identified that the variable affecting the sector the most was interest rate. When the results of panel cointegration test between interest rate and agricultural production were examined, while there was a negative directional relationship between the production of subsector “fruit vegetable” and the variable “interest” as expected, it attracts attention that there was a positive relationship between the subsector of cereal legume and interest in contrast to this.
Show more [+] Less [-]Farklı Azot Kaynakları ile Yapılan Yaprak Gübrelemesinin Marul (Lactuca sativa L.)’da Verim, Nitrat Birikimi ve Maliyet Üzerine Etkisi Full text
2020
Haluk Çağlar Kaymak | Adem Aksoy
Bu araştırma, farklı azot kaynakları ile yapılan ilave yaprak gübrelemesinin marul (Lactuca sativa L.)’da verim ve nitrat birikimi üzerine etkisini belirlemek amacı ile tarla koşullarında yürütülmüştür. Bitkisel materyal olarak bir adet yaz sıcaklarına dayanıklı kıvırcık marul (cv. ‘Bohemia F1’) çeşidi, yaprak uygulaması olarak da üre (CO(NH2)2), potasyum nitrat (KNO3) ve kalsiyum nitrat (Ca(NO3)2)’ın %0,4, %0,6 ve %0,8’lik dozları kullanılarak yaprak gübrelemesi yapılmıştır. Yaprakta toplam azot değerleri %2,20 (KNO3 %0.4) ile %3,00 (Üre %0,8) arasında değişmiştir. En yüksek nitrat birikimi 2610 mg kg-1 ile Ca(NO3)2’ın %0,8’lik uygulamasında belirlenirken, en düşük nitrat birikimi ise 2070 mg kg-1 ile sadece taban gübrelemesi (NH4NO3) yapılan parselde tespit edilmiştir. Farklı azot kaynakları ile yapılan ilave yaprak gübrelemesi sonucunda marulda en yüksek verim değerleri sırasıyla 4926 kg da-1 (Üre %0,6), 4787 kg da-1 (Üre %0,8) ve 4719 kg da-1 (Ca(NO3)2 %0,6) olarak tespit edilmiştir. Ancak, diğer girdilerin eşit olduğu araştırmada; gübre masraflarını dikkate alındığında karlılık analizinde ilk üç sıra diğer gübrelere göre düşük maliyetinden dolayı, ürenin farklı dozları ile yapılan ilave yaprak gübrelemesinde tespit edilmiştir. Araştırma sonuçlarına göre; karlılık oranları da göz önüne alındığında üre (%0,6) ile yapılan uygulamaların hem yüksek verim hem de yüksek kar elde etmek için daha uygun ve önerilebilir ilave yaprak gübrelemesi olduğu açık bir şekilde söylenebilir.
Show more [+] Less [-]Cover and Table of Contents Full text
2020
Editoral Editoral
Awareness and Attitude towards Functional Dairy Products among Consumers in Western Province of Sri Lanka Full text
2020
Narayana Mudiyanselage Nayana Kumari Narayana | Sanjeewa Fernando | Gangani Chandima Samaraweera
Functional foods are the foods that provide health benefits beyond the basic nutrition. Dairy products have a prominent position in the functional food market. However, market share for functional dairy products in Sri Lanka is low compared to most of the countries in the world. Awareness of consumers and attitude towards a healthy life is essential for market success of functional dairy products. Therefore, a study was conducted to investigate the status of awareness of and attitudes towards functional dairy products among consumers from Western Province of Sri Lanka. The study was conducted using a pre-tested structured questionnaire during June to November 2018, with the participation of 307 purposively selected consumers. Information on consumers’ tendency towards a healthy life style, awareness and perception on health benefits of functional foods and dairy products, confidence on different information sources etc. were recorded. SPSS statistical software package was used for the data analysis. The empirical findings showed that the consumers still concern about taste and cost rather than health when buying food products. Consumer age showed a significant (χ2=19.41, p
Show more [+] Less [-]Determining The Concentration Level of Some Elements Caused by Geological Period in The Sediments of Lake Hazar Full text
2020
Özgür Canpolat | Kürşad Kadir Eriş | Eyyüp Önder Akkoyun
In this study, it was aimed to determine the concentrations of some elements in sediment along depht profile in core collected at the Lake Hazar (Elazıg) and to compared the results according to recent geological periods. For this purpose, the levels of arsenic (As), mercury (Hg), molybdenum (Mo), barium (Ba), uranium (U), tin (Sn), titanium (Ti), lanthanum (La) and beryllium (Be) on every 5 cm of the piston core samples taken as part of a TUBİTAK project (No: 111Y045) from Lake Hazar were detected. The lowest concentrations of Ba, Hg, La, Ti and U were found (111 ppm, 0.01 ppm, 4.4 ppm, 1190 ppm and 0.6 ppm respectively) at 81-83 cm in depth. It was determined that it belonged to 10 000 B.P. and to Holocene Period (10.5 thousand B.P.). The highest concentrations of As, Ba, Hg, Sn, La, Mo, Ti and U were found different depth in the core in Lake Hazar. The highest concentrations of Hg in the core were detected between 4-6 cm that this depth was determined corresponds to present day. The highest levels of As and Ba found that it belonged to Pre-Glacial Period/ Late Pleistocene Period (10.5 thousand B.P.). The highest concentration of other elements (Sn, La, Mo and Ti) determined that it belonged to Last Glacial Maximum Period/Late Pleistocene Period (between 23-16 thousand B.P.). The geological structure of the basin where the lake ecosystem is located, biological and hydrological processes, climatic and anthropogenic factors can be cited as the reasons for these differences.
Show more [+] Less [-]Antifungal Effects of Some Raw Purple Vegetables on Foodborne Molds by Ethanol Extracts Full text
2020
Gökhan Akarca | Oktay Tomar | Elif Başpınar | Gamze Yıldırım
Vegetables; in terms of vitamins, nutritional fiber, phenolic component and mineral matter has an important role in human nutrition. There are many species of purple-red vegetables, some of which are well-known, such as red beet (Beta vulgaris), black carrot (Daucus carota ssp. sativus var. atrorubens Alef), black radish (Raphanus sativus L. var. niger), purple cabbage (Brassica oleracea L. var. capitata f. rubra). Purple or red vegetables have higher antioxidant potential compared to other vegetables, which have many beneficial properties such as antimicrobial, antifungal, anti-inflammatory and liver protection. Each of vegetables which is black carrot, beetroot, black radish and purple cabbage contains p-coumaric acid, betaxanthin, ellagic acid and indole-3-carbinol respectively. In this study, Antifungal effect of ethanol extracts obtained from red beet, black carrot, black radish which are inner and peel part, purple cabbage against 7 different subspecies of Penicillium, 6 different subspecies of Aspergillus and Mucor racemosus, Botrytis cinerea, Geotrichum candidum, Cladosporium claudosporioides, Rhizopus nigricans species were determined by using disk diffusion method. As a consequence; it was determined that 7 different samples had antifungal effect on 18 different mold species at various rate. The highest antifungal effect was observed with 23.05±0.05 mm zone diameter against A. fumigatus in black radish inner part ethanol extract. This value was pursued by red beet inner part ethanol extract against M. racemosus with 21.44±0.12 mm zone diameter. It was concluded that the lowest antifungal effect on mold species except for P. citrinum, P. solitum and B. cinerea in purple cabbage extract.
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