Egg Yolk Carotenoids: Composition, Analysis, and Effects of Processing on Their Stability

2013 ◽  
pp. 219-225 ◽  
Author(s):  
Chamila Nimalaratne ◽  
Jianping Wu ◽  
Andreas Schieber
Keyword(s):  
Egg Yolk ◽  
Composition Analysis ◽  
Yolk Carotenoids

scholarly journals Lipolysis and oxidation of lipids during egg storage at different temperatures

2017 ◽  
Vol 35 (No. 3) ◽  
pp. 229-235 ◽  
Author(s):  
Qingling Wang ◽  
Guofeng Jin ◽  
Ning Wang ◽  
Yongguo Jin ◽  
Meihu Ma ◽  
...  
Keyword(s):  
Lipase Activity ◽  
Storage Temperature ◽  
Egg Yolk ◽  
Lipid Profiles ◽  
Composition Analysis ◽  
C Storage ◽  
Physicochemical Index ◽  
Significant Difference ◽  
Different Temperatures ◽  
Egg Storage

The aim of this study was to investigate lipolysis and lipid oxidation of stored eggs at different temperatures (4 and 22°C) by evaluating the changes in physicochemical index, lipid profiles, enzymatic activity, and oxidative index. The results showed that the changes in physicochemical index were more significant at 22°C than at 4°C. Weight loss, moisture content, and pH of egg yolk increased significantly (P < 0.05), whereas the yolk index decreased during storage. However, there was no significant difference in lipid profiles between 4 and 22°C storage temperature. The lipid composition analysis demonstrated that lipid hydrolysis took place during egg storage and resulted in a marked decrease of PL and increase of FFA. It was also found that the content of phosphatidylcholine (PC), phosphatidylethanolamine (PE), and phosphatidylinositol (PI) decreased significantly during storage. The correlation analysis showed that the lipid degradation is significantly positively related to lipase activity (P < 0.05), and the marked changes of lipid fractions are results of both hydrolysis and oxidation. It can be concluded that the egg physicochemical index and lipase activity were greatly influenced by temperature during storage, but the yolk lipid stability was not significantly influenced by storage temperature.

Structure and Composition Analysis of Egg Yolk

2014 ◽  
Vol 997 ◽  
pp. 112-115
Author(s):  
Xin Wang ◽  
Qi Gen Tong
Keyword(s):  
Outer Layer ◽  
Elastic Layer ◽  
Egg Yolk ◽  
Composition Analysis ◽  
Microscopic Structure ◽  
Viscous Layer ◽  
Quality Problem ◽  
Egg Yolks

In this paper, the structure and composition of the egg yolk to solve the quality problem of the salted egg, preserved egg, and other products have a guiding role. Refrigeration, heating, formaldehyde solidification method is adopted to study the macroscopic and microscopic structure of egg yolks, results show that three levels yolks, respectively is the middle elastic layer, sand viscous layer, the outer layer, egg yolk, the three layers of macroscopic and microscopic structure exists a big difference.

Egg Yolk Carotenoids in Relation to Habitat and Reproductive Investment in the Great TitParus major

2008 ◽  
Vol 81 (1) ◽  
pp. 112-118 ◽  
Author(s):  
Caroline Isaksson ◽  
Anette Johansson ◽  
Staffan Andersson
Keyword(s):  
Reproductive Investment ◽  
Egg Yolk ◽  
Yolk Carotenoids

Repeatability of laboratory measurements for maternally derived yolk carotenoid concentrations in bird eggs

2006 ◽  
Vol 54 (6) ◽  
pp. 381 ◽  
Author(s):  
Phillip Cassey ◽  
John G. Ewen ◽  
Filiz Karadas ◽  
Mark E. Hauber
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Performance ◽  
Bird Species ◽  
Egg Yolk ◽  
Laboratory Measurements ◽  
Bird Eggs ◽  
Yolk Carotenoids ◽  
Hplc Analyses ◽  
Biological Differences

We describe a source of variability in maternally derived yolk carotenoids that is not routinely calculated in published studies. We quantify the measurement error in yolk carotenoid concentrations that may accrue during the analysis of yolk contents from repeat extractions and repeat high performance liquid chromatography (HPLC) runs of the same egg yolk sample from free range clutches of four farm bird species in New Zealand. We show that the variability between different eggs is substantially greater than the variability between replicate yolk extractions and HPLC analyses. Importantly, our results provide confidence to researchers that technical repeatability is a lesser concern when studying the biological differences between yolk samples.

A nondestructive method for extracting maternally derived egg yolk carotenoids

2007 ◽  
Vol 78 (3) ◽  
pp. 314-321 ◽  
Author(s):  
Phillip Cassey ◽  
John G. Ewen ◽  
Rebecca L. Boulton ◽  
Filiz Karadas ◽  
Anders P. Møller ◽  
...  
Keyword(s):  
Egg Yolk ◽  
Nondestructive Method ◽  
Yolk Carotenoids

Municipal Solid Waste Treatment Using Plasma Gasification with the Potential Production of Synthesis Gas (Syngas)

2019 ◽  
Vol 2 (1) ◽  
pp. 8-12
Author(s):  
Angela Hartati ◽  
Diah Indriani Widiputri ◽  
Arbi Dimyati
Keyword(s):  
Waste Treatment ◽  
Composition Analysis ◽  
Energy Agency ◽  
Plasma Gasification ◽  
Gasification Process ◽  
Solid Waste Treatment ◽  
Pre Treatment ◽  
Waste Separation ◽  
Gasification Efficiency ◽  
Arc Plasma Torch

This research was conducted for the purpose to overcome Indonesia waste problem. The samples are classified into garden waste, paper waste, wood, food waste, and MSW with objective to identify which type of waste give out more syngas since there is waste separation in Indonesia. All samples were treated by plasma gasification without pre-treatment (drying). Arc plasma torch used in this experiment was made by National Nuclear Energy Agency (BATAN) and used Argon as the gas source. Then the torch was connected to self-designed gasification chamber and gas washing system before injected into a gas bas for composition analysis. Another objective is to identify factors that may affect the gasification efficiency and the experiment shows that moisture content is not really affecting the efficiency but the duration of the process. The mass reduction of each samples were recorded, then the gas produced from the gasification process were analyzed. The result shows that food has the highest mass percentage reduced and producing the highest amount of hydrogen amongst other samples. However, treating MSW also produce considerably high amount of hydrogen. In conclusion, MSW direct treatment (without separation) using plasma gasification is feasible since it still produces desirable quality of syngas.

Kualitas Semen Cair Kambing Boer Berbahan Pengencer Air Kelapa Muda Varietas Viridis Setelah Simpan Dingin

2019 ◽  
Vol 6 (1) ◽  
pp. 78
Author(s):  
Muhammad Ade Salim ◽  
Muhammad Nur Ihsan ◽  
Nur Isnaini ◽  
Trinil Susilawati
Keyword(s):  
Semen Quality ◽  
Block Design ◽  
Animal Husbandry ◽  
Egg Yolk ◽  
Coconut Water ◽  
Boer Goat ◽  
Randomized Block Design ◽  
Frozen Semen ◽  
Artificial Vagina

ABSTRAKAir kelapa muda varietas viridisdapat dijadikan pengencer aletrnatif semen cair bagi program IB di daerah minim sarana semen beku. Tujuan penelitian ini untuk menguji pengaruh penggunaan air kelapa muda viridissebagai bahan pengencer terhadap kualitas semen cair kambing Boer setelah didinginkan. Dilaksanakanselama 3 bulan di Laboratorium Fakultas Peternakan UBUnit SumberSekar,Malang. Metodenya yaitu eksperimen. Semen dari  3 pejantan Boer umur 3-5 tahun, dikoleksi seminggu sekali dengan VB. Air kelapa mudaviridis umur 5-7 bulan serta tris aminomethane sebagai kontrol. Didesain menggunakan Rancangan Acak Kelompok (RAK) dengan 2 perlakuan yaitu P0 (tris aminomethane + 10% KT) dan  P1 (air kelapa muda viridis + 10% KT) masing-masing diulang 10 kali. Data dianalisis dengan analisis Ragam (Anova) dengan software Genstat 18. Variabelnya yaitu motilitas individu, viabilitas dan abnormalitas. Hasil penelitian yaitu motilitas individu pada P1bertahan sampai 4 hari (40,5± 24,3%), viabilitas terbaik sampai hari ke-5 (42±24,6%), abnormalitas terendah di hari ke-7(1,31± 0,6). Kesimpulannya, Pengencer air kelapa muda viridis dapat mempertahankan kualitas semen cair kambing Boer selama 4 hari untuk motilitas dan 5 hari untuk viabilitas.Kata Kunci:pengencer, air kelapa, varietas viridisABSTRACTYoung viridis coconut water could be used as an alternative to liquid semen diluent for artificial insemination program in the area with limited facility for frozen semen production. This study evaluated the use of young coconut water as a diluent on liquid semen quality of Boer goat after cold storage. This study was carried out for 3 months at Sumber Sekar Laboratory, Faculty of Animal Husbandry, University of Brawijaya, Malang. The semen was collected from 3 Boer bucks aged at 3 to 5 years old. The semen collection was done once a week with the aid of artificial vagina. The diluents used were young Viridis coconut (5 to 7 months old) and tris aminomethane. The method used was an experiment in a randomized block design with 2 treatments and 10 replicates. The treatments used were T0: tris aminomethane + 10% egg yolk (control) and T1:  young Viridis coconut water + 10% egg yolk. Data were analyzed by analysis of variance using Genstat 18 software. The variables measured were sperm individual motility, viability, and abnormality. The results showed that the sperm individual motility in T1 survived up to 4 days (40.5± 24.3%), the best viability at 5 days (42.0±24.6%),  while the lowest abnormality at 7 days (1.31±0.6). It could be concluded that: 1. Tris aminomethane diluent has higher quality with the storage length up to 9 days, 2. Young Viridis coconut water diluent could preserve liquid semen quality of Boer goat up to 4 days for sperm motility and 5 days for sperm viability.Keywords: diluents, coconut water, viridis variety

Kriopreservasi Semen Kambing Boer dengan Konsentrasi Pengencer Nira Aren dan Gliserol Berbeda

2019 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Muhammad Riyadhi ◽  
Anis Wahdi ◽  
Muhammad Rizal
Keyword(s):  
Sperm Motility ◽  
Membrane Integrity ◽  
Egg Yolk ◽  
Boer Goat ◽  
Palm Juice ◽  
Sperm Membrane ◽  
Live Sperm

ABSTRAK                                                                        Penelitian bertujuan untuk mengetahui efektivitas nira aren sebagai pengencer alternatif dalam proses pembekuan (kriopreservasi) semen kambing boer.Kriopreservasi semen kambing boer menggunakan pengencer tris-gliserol-kuning telur (P1 73-7-20%), nira aren-gliseol-kuning telur(masing-masing P2 74-6-20%, P3 73-7-20%, dan P4 72-8-20%) dan andromed (P5 tanpa mengandung kuning telur dan gliserol). Parameter evaluasi meliputi motilitas, viabilitas, dan membrane plasma utuh setelah pengenceran, ekuilibrasi dan thawing.  Evaluasi motilitas pasca thawing menunjukkan P5 52% berbeda nyata (P<0.05) dengan P1 42%, selanjutnya P5 dan P1 berbeda sangat nyata (P<0.05) dengan P2 8%, P3 6% dan P4 12%.  Viabilitas pasca thawing menunjukkan P5 65,4% tidak berbeda nyata (P>0,05) dengan P1 61,8%, akan tetapi P5 dan P1 berbeda sangat nyata (P<0.05) dengan P2 26,2%, P3 29,8%, dan P4 34%.  Membran plasma utuh (MPU) pasca thawing menunjukkan P5 66,2% tidak berbeda nyata (P>0,05) dengan P1 65,4%, akan tetapi keduanya berbeda sangat nyata (P<0.05) dengan P2 39%, P3 38%, dan P4 36,2%.  Disimpulkan kriopreservasi semen kambing boer dengan pengencer nira aren dan gliserol pada konsentrasi berbeda belum dapat dipergunakan sebagai sumber bibit berdasarkan standar nasional Indonesia.Kata Kunci : Kambing boer, semen, nira arenABSTRACTThe experiment was conducted to determine the effect of sugar palm juice as alternative extender for cryopreservation process of boer semen.Tris-glycerol-egg yolk (P1 73-7-20%), Sugar palm juice-glyserol-egg yolk (P2 74-6-20%, P373-7-20%, dan P4 72-8-20%), and andromed (P5) used as a extender  in the cryopreservation process of boer semen.  Sperm motility (%), live sperm (%) and sperm membrane integrity (%) were recorded after diluted, equilibration and freeze-thawing.  Result of post thawing motility showed that P5 52% was significantly different (P <0.05) with P1 42%, then P5 and P1 were significantly different (P <0.05) with P2 8%, P3 6% and P4 12%. Viability after thawing showed P5 65.4% was not significantly different (P> 0.05) with P1 61.8%, but P5 and P1 significantly different (P <0.05) with P2 26.2%, P3 29.8 %, and P4 34%. Spermmembrane integrity post-thawing showed P5 66.2% was not significantly different (P> 0.05) with P1 65.4%, but both were very significantly different (P <0.05) with P2 39%, P3 38% and P4 36.2%. Conclusions, sugar palm juice-glycerol-egg yolk with differentconcentrationsineffectively as an alternative extenderin cryopreservation of boer semen.Keywords: boer goat, semen, sugar palm juice

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