Efecto de las condiciones de procesamiento, contenido de grasa y grado de frescura de la materia prima en la calidad de filetes de bagre ahumados / Effect of processing conditions, lipids content and freshness on acceptability of smoked catfish

1999 ◽  
Vol 5 (2) ◽  
pp. 167-176 ◽  
Author(s):  
E. Tomé ◽  
M. Kodaira ◽  
Y. Matsunaga

This work has evaluated the effect of processing conditions on the acceptance of smoked catfish (P. fasciatum). The processing variables studied were thickness (1.9 and 3.6 cm), salting time (30, 60 and 90 min) and smoking time (4, 5 and 6 h at varying temperatures). The influence of the species (P. pirinampu and P. fasciatum) and the freshness of the fillets were also studied. Smoked fillets of 1.9 cm thickness had moisture contents significantly (p < 0.05) lower and the salt concentration was significantly greater than in the salted smoked fillets of 3.6 cm thickness. The thinner fillets received the greatest scores for texture and appearance. Concerning salting time, fillets salted for 30 min received the greatest score for overall acceptance. The greatest dehydration rate ocurred during the first 3 h of smoking at temperatures between 30 and 50°C. Color and texture of products with 5 h and 6 h of smoking were better than those with only 4 h. Lipids content greatly affected sensorial acceptance of smoked products; fillets from P. pirinampu, a fatty fish, received the lowest score for all the sensory attributes evaluated. The loss of freshness of raw fish affected negatively the odor, appearance and overall acceptance of the products.

2012 ◽  
Vol 184-185 ◽  
pp. 1194-1197
Author(s):  
Bin Li ◽  
Hong Wang

Particle reinforced ceramics can be fabricated by a variety of methods, some of which have their origins in early civilization. The key objective of sintering studies is therefore to understand how the processing variables influence the microstructure evolution. In this way, useful information can be provided for the practical effort of designing processing conditions for producing the required microstructure.


Coatings ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 558 ◽  
Author(s):  
Xianqing Xiong ◽  
Yiting Niu ◽  
Yingying Yuan ◽  
Liangting Zhang

As an important industry of the national economy, the development of furniture manufacturing industry is very rapid. In particular, with the development of panel furniture industry, wood-based panels have become a necessary choice for furniture material for modern families in recent years. As a new particleboard material, in order to be more widely used in the furniture industry, it is not enough to have the characteristics of environmental protection. The material should also have excellent appearance and dimensional stability, so as to change people’s dependence on traditional wood-based panels. In this study, the rice straw particleboard (RSP) substrate was veneered by Betula sp. and Cyclobalanopsis glauca. In the process of veneering, different RSP specimens were treated by different sanding thicknesses and moisture contents of the RSP substrate, glue spread, species and thickness of veneer. The dimensional stability of different RSP specimens after veneering was analyzed. Based on the same variables, the change in the panel dimension and warp degree of the specimens of RSP which the sanding thickness was 0.2 mm were higher than the specimens with a sanding thickness of 0.6 mm. The dimensional stability of specimens of Cyclobalanopsis glauca veneer was better than that of Betula sp. veneer. A certain degree of change within the appropriate moisture content had a little effect on dimensional stability of veneered RSP. The greater of the amount of glue, the worse the dimensional stability of veneered RSP. The thinner the veneer, the worse was the dimensional stability of the veneered RSP.


2012 ◽  
Vol 507 ◽  
pp. 149-153 ◽  
Author(s):  
Jae Ik Choi ◽  
Esther Sluzky ◽  
Maria Anc ◽  
Alan Piquette ◽  
Mark E. Hannah ◽  
...  

Electrophoretic deposition (EPD) has been used for phosphor screening for a variety of emissive information displays and more recently, for solid state lighting. EPD is well suited to deposit the fine (nanometer to micrometer diameter) phosphor particles needed for high resolution displays. The fundamentals of the EPD process in an isopropanol (IPA) bath have been characterized by the dissociation behavior of nitrate salts in IPA, measurement of the effects of pH and nitrate salt concentration on the zeta potential of the particles, studying of the processing conditions and modeling of the deposition rates. The electrochemical precipitation reactions form an adhesive agent for the particles and the adhesion strength can be enhanced by various methods to meet the requirements of these technologies.


2013 ◽  
Vol 777 ◽  
pp. 440-443
Author(s):  
Yao Chen ◽  
Li Li ◽  
Bai Lu Yang ◽  
Chun Long Li

In order to study the effect of salinity wastewater discharging ways on the range of salt content rise nearby the outfall. Two three-dimensional numerical models of discharging ways which were single-port submerged-type and double-port submerged-type in the condition of subcritical flow were researched based on FLUENT. The range of salt content rise of the two discharging ways could be concluded according to the simulation results. The value of maximum salt concentration and average salt concentration of two discharging ways were compared and analyzed. The results showed that double-port submerged-type discharging way was better than single-port submerged-type discharging way.


2014 ◽  
Vol 1017 ◽  
pp. 495-499
Author(s):  
Ya Dong Gong ◽  
Chao Wang ◽  
Jun Cheng ◽  
Xue Long Wen ◽  
Guo Qiang Yin

Orthogonal experiments of micro mill-grinding were conducted on aluminium alloy 6061. Electroplated CBN compound tools were used in machining. Surface topography and roughness of the machined workpieces were measured and analyzed. Influence rules of radial cutting depth,feed rate and spindle speed on surface roughness in micro mill-grinding were studied. The results were compared with those in micro milling. It shows that the influence rules of processing parameters on surface roughness in micro mill-grinding are approximately same with those in micro milling. And in the same processing conditions, the surface roughness of micro mill-grinding is better than that of micro milling. The minimum value of surface roughness Ra of micro mill-grinding is 0.609μm in the experiments.


Foods ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 634
Author(s):  
Ivan Luzardo-Ocampo ◽  
Aurea K. Ramírez-Jiménez ◽  
Jimena Yañez ◽  
Luis Mojica ◽  
Diego A. Luna-Vital

Natural colorants have emerged as an alternative to their synthetic counterparts due to an existing health concern of these later. Moreover, natural-food colorants are a renewable option providing health benefits and interesting technological and sensory attributes to the food systems containing them. Several sources of natural colorants have been explored aiming to deliver the required wide color range demanded by consumers. This review aimed to compare and discuss the technological applications of the main natural-food colorants into food system in the last six years, giving additional information about their extraction process. Although natural colorants are promising choices to replace synthetic ones, optimization of processing conditions, research on new sources, and new formulations to ensure stability are required to equate their properties to their synthetic counterparts.


Author(s):  
Ni Putu Jesika Novianti ◽  
Luh Putu Mahyuni

Songan Village, Kintamani District is a village that has local potential, namely the large number of tilapia fish cultivators. However, the cultivators have been selling their harvest in the form of raw fish only. The relatively cheap price of raw fish cannot provide significant benefits to tilapia fish cultivators, so that innovation is needed to add the value by further processing it. Seeing this situation, it is necessary to hold training in processing tilapia fish into ready-to-eat food such as fish floss and in product packaging, in order to increase the selling value of tilapia fish. Making fish floss does not require a large cost, so it is easy to be applied by tilapia fish cultivators. Meanwhile, the selling value is relatively better than the selling value of raw fish. Problems in the field in this community service activity were explored through observation and interview methods. After the problems were identified, training preparations and socialization were carried out, then training on making fish floss and their packaging were conducted. This activity is succeeded in providing an understanding of the importance of increasing the added value of fish production by processing it into fish floss, providing skills in making floss and packaging. Subsequent service activities can be directed at efforts to assist the community in obtaining P-IRT permits, assisting sales through social media, and accompanying the next production innovation process, among others by trying various other flavours apart from those tested in current community service activities. Desa Songan, Kecamatan Kintamani merupakan desa yang memiliki potensi lokal yaitu banyaknya pembudidaya ikan mujair dan oleh pembudidaya hanya dimanfaatkan dengan cara menjual hasil panennya berupa ikan mentah saja. Harganya yang relatif murah kurang bisa memberikan keuntungan yang signifikan terhadap pembudidaya ikan mujair, sehingga dibutuhkan inovasi untuk mengolahnya lebih lanjut. Melihat situasi semacam ini, maka perlu diadakan pelatihan pengolahan ikan mujair menjadi makanan siap saji seperti abon ikan dan pengemasan produk  agar dapat meningkatkan nilai jual ikan mujair. Pembuatan abon ikan ini tidak memerlukan biaya yang besar, sehingga mudah untuk diaplikasikan oleh pembudidaya ikan mujair. Sementara nilai jualnya relatif lebih baik daripada nilai jual ikan mentah. Permasalahan di lapangan dalam kegiatan pengabdian ini digali melalui metode observasi dan wawancara. Setelah permasalahan berhasil diidentifikasi, dilakukan persiapan pelatihan dan sosialisasi, kemudian dilakukan pelatihan pembuatan abon ikan beserta pengemasannya. Kegiatan ini berhasil memberikan pemahaman akan pentingnya meningkatkan nilai tambah produksi ikan melalui pengolahannya menjadi abon ikan, memberikan keterampilan pembuatan abon ikan dan pengemasannya. Kegiatan pengabdian selanjutnya dapat diarahkan pada upaya mendampingi masyarakat dalam pengurusan ijin P-IRT, membantu penjualan melalui media sosial, dan mendampingi proses inovasi produksi berikutnya, antara lain dengan mencoba berbagai varian rasa lainnya selain yang diuji coba pada kegiatan pengabdian saat ini.


2023 ◽  
Vol 83 ◽  
Author(s):  
G. Mustafa ◽  
A. Iqbal ◽  
A. Javid ◽  
A. Hussain ◽  
S. M. Bukhari ◽  
...  

Abstract The medicinal attributes of honey appears to overshadow its importance as a functional food. Consequently, several literatures are rife with ancient uses of honey as complementary and alternative medicine, with relevance to modern day health care, supported by evidence-based clinical data, with little attention given to honey’s nutritional functions. The moisture contents of honey extracted from University of Veterinary and Animal Sciences, Lahore honey bee farm was 12.19% while that of natural source was 9.03 ± 1.63%. Similarly, ash and protein contents of farmed honey recorded were 0.37% and 5.22%, respectively. Whereas ash and protein contents of natural honey were 1.70 ± 1.98% and 6.10 ± 0.79%. Likewise fat, dietary fiber and carbohydrates contents of farmed source documented were 0.14%, 1.99% and 62.26% respectively. Although fat, dietary fiber and carbohydrates contents of honey taken from natural resource were 0.54 ± 0.28%, 2.76 ± 1.07% and 55.32 ± 2.91% respectively. Glucose and fructose contents of honey taken out from honeybee farm were 27% and 34% but natural source were 22.50 ± 2.12% and 28.50 ± 3.54%. Glucose and fructose contents of honey taken out from honeybee farm were 27% and 34% but natural source were 22.50 ± 2.12% and 28.50 ± 3.54%. Similarly, sucrose and maltose contents of farmed honey were 2.5% and 12% while in natural honey were 1.35 ± 0.49% and 8.00 ± 1.41% respectively. The present study indicates that such as moisture, carbohydrates, sucrose and maltose contents were higher farmed honey as compared to the natural honey. In our recommendation natural honey is better than farmed honey.


2022 ◽  
pp. 24-43
Author(s):  
Elaine Elaine ◽  
Kar Lin Nyam

Nanoemulsion is a versatile emulsion-based delivery system that can be structured or prepared with different compositions, methods, or processing variables. Although single nanoemulsion has been a promising delivery carrier in numerous industries, the innovation of double nanoemulsion is introduced to provide different benefits. However, the nanoemulsion must be optimized in terms of the composition and emulsification methods to maintain the integrity of the delivery system. Therefore, the optimization of nanoemulsion can range from deciding the type and concentration of compositions (aqueous, lipid, surfactants) to the processing conditions during emulsification. The current options of emulsification methods, processing parameters, and optimization process of nanoemulsion are highlighted and elaborated in this chapter. This allows readers to understand the fundamental principles of nanoemulsion preparation and encourage future studies and applications in the related field.



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