Effect Of Different Storage Periods Research Articles

Effect of different storage periods on pathogenic bacteria isolated from wheat grains contaminated with serrated grain beetle Oryzaephilus surinamensis L. (Coleoptera: Silvanidae) stored in Al-Rifai city

The study was carried out in the College of Science, University of Sumr, an insect lab during the year 2022. The current study was conducted to isolate and diagnose some types of aerobic pathogenic bacteria during different time periods 3 months, 6 months and 9 months from wheat grains infected with the serrated grain beetle and to know the effect of changing the periods on the level of contamination with pathogenic bacteri Nine types of pathogenic bacteria have been isolated (Bacillus cereus, Escherichia coli , Proteus mirabils , Enterococcus faecalis , Enterobactor aerogenes , Pseudomonas aerugenosa, Klebsiella pneumonia, Staphlococcus aureus, Staphlococcus epidermidis) from mechanically damaged wheat samples infected with the insect under the influence The factor of the difference in the duration of storage, and it was found that the period of 6 months is relatively superior.

Analysing the Impact of Broiler Line and Egg Preservation Durations on Immunoglobulin Levels and Some Egg Quality Indicators

The basis of the poultry industry is the presence of parent flocks, and the lack of this causes the eggs to be transported for long periods and long distances, reducing the quality of hatching eggs and producing poor-quality, low-weight chicks. Therefore, the current study investigates the effect of different storage periods for different types of broiler chickens on the internal immunity of the egg and some qualitative characteristics of stored eggs. Three lines of broiler were used from three hatcheries (Ross 308-1: Ross 308-2: Cobb 508); these lines of eggs were imported from Türkiye and the Netherlands to Iraq, and all eggs were storage for four periods (15, 20, 25 and, 30 days) at seven c⸰. The results showed a significant (P≤0.05) increase for (line- 2) in total IgY at 25 days, and line three increased significantly (P≤0.05) in the HU unit at 25 days too. Meanwhile, there is no significant difference between periods in egg weight loss (Table 2), albumin pH, relative albumin weight, and yolk weight. It is concluded from the study's results that any storage duration may affect the egg's internal immunity and its qualitative characteristics. Thus, it may negatively affect the hatching rate and characteristics of the hatched chicks.

Effects of fermentation time, baking, and storage on ochratoxin A levels in sourdough flat bread.

Ochratoxin A (OTA), which is one of the most important mycotoxins in terms of human health, can be found in cereal products such as bread, "bazlama" (traditional flatbread), and pita bread, as well as cereals such as wheat, barley, and corn. This study aimed to determine the effect of different fermentation times, baking, and storage for various periods on the presence of OTA in sourdough bazlama. Bazlama flour was contaminated with OTA concentrations of 5 and 10 μg/kg. After two different fermentation times (1.5 and 3 h), baking at 300 ± 5°C, and storage at room temperature (25 ± 2°C) for 0, 5, and 10 days, the change in OTA levels of bazlama samples was determined by the high-performance liquid chromatography with fluorescence detector (HPLC-FLD) method. The effect of different storage periods on the presence of OTA is insignificant. Although a general decrease in OTA level has been determined, it has been found that long-term fermentation (at least 3 h) was more effective, especially in flours with a high concentration (10 μg/kg) of OTA contamination. It has been determined that bazlama made from contaminated flours with OTA levels of 5 and 10 μg/kg contained OTA levels exceeding 3 μg/kg when long-term fermentation was not used. This is the maximum permitted limit set by the Turkish Food Codex and the European Commission, indicating that it is not suitable for consumption in this position.

Kiraz domatesi çeşitlerinde farklı depolama sürelerinin bazı mekanik özelliklere etkisi

Amaç: Bu çalışmanın amacı, iki çeşit kiraz domatesi meyvesinin kütle, hacim, geometrik ortalama çap, küresellik, yüzey ve projeksiyon alanı gibi fiziksel özellikleri ile statik yük etkisi altında farklı sıkıştırma pozisyonlarının ve farklı depolama sürelerinin mekanik özellikler üzerindeki etkisini incelemektir. Materyal ve Yöntem: Örneklerin fiziksel özelliklerinin belirlenmesi için kütle, hacim, geometrik ortalama çap, küresellik ve yüzey alanı değerleri hesaplanmıştır. Projeksiyon alanı ImageJ görüntü işleme programı ile belirlenmiştir. Örneklerin kuvvet etkisi altındaki davranışlarının tespiti için örnekler sıkıştırma testine tabii tutulmuştur. Araştırma Bulguları: Kiraz domatesi meyvesinde yapılan ölçümlerde, fiziksel özellikler Trend F1 çeşidinde daha yüksek olduğu bulunmuştur. İki farklı eksende yapılan ölçümlerde, her iki sıkıştırma pozisyonunda depolama süresindeki artışla beraber deformasyonda da artış görülmüştür. Ayrıca, meyve sap eksenindeki kuvvetin meyve sap eksenine dik uygulanan kuvvete göre daha fazla olduğu, deformasyonun da benzer bir eğilim gösterdiği gözlenmiştir. Sonuç: Domates meyvesinin özellikle depolama sırasında meyve sap eksenine dik olarak konumlanmasının statik yük altında meyve sap eksenine dik pozisyonda taşımaya göre daha dayanımlı olacağı sonucuna varılmıştır.

Effect on nutritional quality changes in fresh and canned Scomber australasicus and Scomberomorus guttatus.

The purpose of present research was to investigate the effect of different storage periods on nutrients composition of the two the fish species. In the present study, proximate composition, energy values and oil indexes of two the fish species Scomber australasicus and Scomberomorus guttatus were determined. The lipid content of the fresh S. guttatus was found significantly higher than the S. australasicus (p < .05). The S. australasicus after 2 months storage found lowest calorie value (275.5 kcal/kg). The calorie values of S. australasicus after 4 months storage was 292.5 kcal/kg and for S. guttatus after 6 months storage (375.70 kcal/kg) found highest. The number of acidic and peroxide for both types of fish after 2 months storage found 2.66 mg KOH/g and 4.22 meqO2/kg for S. australasicus, and found 2.47 mg KOH/g and 3.76 meqO2/kg for S. guttatus which were lowest compared to the other two treatments. The storage periods after the canning process led to a decrease in protein and moisture contents and increase in the lipid content of the canned tuna. The calorie level was related to the parameters such as fat level of the processed S. guttatus after 6 months storage which lead to high calorie level (375.70 kcal/kg-1), while processed S. australasicus after 2 months storage with lower fat content (15.1%) had lower energy value (275.5 kcal/kg-1). The highest acidic, and peroxide value for treatment 6 months storage for canned fish S. guttatus was 4.34 ± 0.36 mg KOH/g, and 5.74 ± 0.25 (meqO2/kg), while for S. australasicus was 4.21 ± 0.34 mg KOH/g, and 6.67 ± 0.23 (meqO2/kg), It can be concluded for fish 6 months storaged S. guttatus, shelf life increased the and can be stored for several years.

PENGARUH LAMA PENYIMPANAN TERHADAP KADAR AIR, ABU DAN BAHAN ORGANIK WAFER PAKAN KOMPLIT JERAMI JAGUNG

Corn straw contains dry matter and organic matter which are nutrients that are needed by livestock, but have high crude fiber, low digestibility and protein content, are bulky (voluminous) and are not economical and inefficient to be transported to areas other. One of the technologies that can be used is a complete wafer-shaped feed technology that consists of fiber feed, namely corn straw and concentrate with a composition based on the nutritional needs of livestock, efficient in storage and transportation and ensures availability in the season of feed shortages. Based on this, this research was carried out with the aim of knowing the effect of different storage periods on water content, ash content, and organic matter of corn straw complete feed wafers. The materials used in this study were corn straw, finished feed concentrate, additives/complementary materials. The tools used in this research are: lawn mowers/waste such as sickles and choppers, milling machines, presses, heaters and molds with a size (15 x 15 x 5) cm. Parameters measured were water content, ash content, and organic matter. The results of the analysis of diversity showed that the effect of storage time on complete feed wafers of corn straw had a significantly different effect (P0.05) on moisture content and ash content and organic matter of complete feed wafers. Further test Honest Significant Difference on water content and ash content of P0 treatment had no significant effect (P 0.05) with P1; but significantly different (P0.05) higher with P2 and P3, while P2 had the same effect as P3. BNJ test for organic matter treatment P0 was significantly different (P0.05) with P1; P2 and P3; Likewise, P1 was significantly different (P0.05) with P2 and P3, while P2 and P3 were not significantly different (P0.05). Based on the results of this study, it can be concluded that complete feed wafers based on corn straw can be stored for up to 6 weeks, based on moisture content, ash content and organic matter.

In Vitro and In Vivo Performance of Plum (Prunus domestica L.) Pollen from the Anthers Stored at Distinct Temperatures for Different Periods

A study was conducted to investigate the effect of different storage periods and temperatures on pollen viability in vitro and in vivo in plum genotypes ‘Valerija’, ‘Čačanska Lepotica’ and ‘Valjevka’. In vitro pollen viability was tested at day 0 (fresh dry pollen) and after 3, 6, 9 and 12 months of storage at four different temperatures (4, −20, −80 and −196 °C), and in vivo after 12 months of storage at distinct temperatures. In vitro germination and fluorescein diacetate (FDA) staining methods were used to test pollen viability, while aniline blue staining was used for observing in vivo pollen tube growth. Fresh pollen germination and viability ranged from 42.35 to 63.79% (‘Valjevka’ and ‘Čačanska Lepotica’, respectively) and 54.58 to 62.15%, (‘Valjevka’ and ‘Valerija’, respectively). With storage at 4 °C, pollen viability and germination decreased over the period, with the lowest value after 12 months of storage. Pollen germination and viability for the other storage temperatures (−20, −80 and −196 °C) were higher than 30% by the end of the 12 months. Pollination using pollen stored at 4 °C showed that pollen tube growth mostly ended in the lower part of the style. With the other storage temperatures, pollen tube growth was similar, ranging between 50 and 100% of the pistils with pollen tubes penetrated into the nucellus of the ovule in the genotype ‘Čačanska Lepotica’. The results of these findings will have implications for plum pollen breeding and conservation.

Role of lipid deterioration on the quality of aquatic products during low‐temperature storage: a lipidomics‐based study using large yellow croaker (Larimichthys crocea)

AbstractThis work investigated the effects of different storage periods (0 day, 90 days, 120 days) on the quality of large yellow croaker oil. The lipomics of large yellow croaker oil was quantitatively detected by GC‐MS, the content of triglyceride in large yellow croaker oil reached 52.56% at 0 day. With the extension of storage time, the content of large yellow croaker oil components decreased gradually. Differential lipid histogram clearly indicates that the extension of the storage period will affect the change of fish oil, due to the rise in the temperature of large yellow croaker oil; the color of the hot map is bright from the dark. Additionally, the fatty acid composition and volatile components were measured. At 120 days, the decomposition rate of lipid molecular in large yellow croaker oil is increased by oxidation of unsaturated fatty acids, and its oxidised metabolite produced small substance such as aldehydes, ketones, alcohols, and acids. During storage, the waxy, fat, and floral flavour in the oil aroma of large yellow croaker oil decreased gradually, while the yeast flavour and oil flavour increased gradually. These results provide insights for the study of lipid transformation and quality of large yellow croaker oil during different storage.

Relationship between storage period and germination of Ipomoea hederacea var. integriuscula seeds under natural condition

AbstractMorning glory (Ipomoea spp.), a problematic weed in soybean fields, is difficult to control due to its long emergence period. The intermittent germination of morning glory prolongs the emergence period, and the factors remain unclear. Therefore, we aimed to clarify the effects of different storage periods under natural conditions on germination conditions and emergence percentages of physically dormant entire‐leaf morning glory (Ipomoea hederacea var. integriuscula) seeds in the field. In 2017–2020, I. hederacea var. integriuscula was cultivated in outdoor planters. Each plant was tagged on the blooming flower peduncle to record the flowering date. The seeds of I. hederacea var. integriuscula germinated 23 days after flowering (DAF). The water content of the seeds decreased rapidly until 30 DAF, and no water absorption occurred thereafter. The germination percentage of seeds in bags outdoors was low from 45 to 210 DAF, and it increased after 270 DAF irrespective of the temperature (20–35°C). On the field surface, the shorter the period of storage in bags outdoors, the lower the cumulative emergence percentage of I. hederacea var. integriuscula. The cumulative emergence was 0% in the soil for seeds of more than 90 DAF. The survival percentage of seeds in the soil increased with the number of DAFs. Therefore, the longer the DAF of the seeds, the higher the emergence of the field and survival percentage in the soil. The long period of storage on mother plants may be one of the factors associated with the long emergence period.

The effect of different storage period on some egg quality characteristics and ovalbumin levels in goose eggs

The aim of the current study was to investigate effect of different storage period on some external and internal egg quality and ovalbumin levels of goose eggs. The alterations of these traits have not been examined sufficiently in goose eggs during the storage. For this purpose, a total of 150 eggs were examined from 50 weeks-old German origin Embden geese. The eggs were stored under constant temperature (+4°C) and ~ 60-65% relative humidity conditions for a period of 7, 14 and 21 days. The weights of 50 eggs were measured and analyzed at 7, 14, and 21 days, respectively. The weight loss, eggshell thickness, and the pH of the albumen and the yolk were different between the storage groups. Other parameters such as, shape index; weights and ratios of albumen, yolk, eggshell, and yolk color were similar between the groups. The pH values of the albumen and yolk, the weight loss, and ovalbumin levels of the albumen had increased during storage. In contrast, the eggshell thickness had declined. According to the results of this study, eggs stored under refrigeration had lower variability on quality parameters. Depending on the increase of ovalbumin with storage, it will be more appropriate to consume goose eggs by allergy-sensitive individuals freshly or after at least end of 1-week storage.

EFFECT OF EGG STORAGE CONDITIONS ON THE HATCHABILITY AND CHICK QUALITY OF DUCKS

EFFECT OF EGG STORAGE CONDITIONS ON THE HATCHABILITY AND CHICK QUALITY OF DUCKS This study was conducted at the French Group Company at Al-Sadat City in Menoufia Governorate to investigate the effect of different pre-incubation egg storage period on the egg weight loss, hatchability, hatch window, duckling quality, duckling immunity, and its body weight. 384 fertile eggs were collected from 200 females of Pekin ducks (Anas platyrhynchos) at the age of (26 weeks of production), which mated by artificial insemention with 30 male of Muscovy ducks (Cairina moschata) to produce Molar ducks. Eggs were divided into four equal treatments (each of 96 eggs) and subjected to different storage periods (0, 4, 8 and 12 days) to determine the effects of different storage periods on egg weight loss, hatchability, hatch window, duckling quality, duckling immunity, and its body weight were measured for the different treatments. The results revealed that there were insignificantly differences (p ≤ 0.05) in egg weight loss by the different pre-incubation egg storage period. Storage eggs for 0 days had the highest hatchability percentage (92.2 %) compared to other experimental groups. Data demonstrated that storage eggs for 12 days achieved the largest hatch window (17:30 hours) when compared with 0, 4 and 8 days of storage. The relationship between storage period and duckling quality revealed that storage eggs for 0 days achieved the highest quality compared to the other groups. Immunity also, was affected by storage period (0 days was the hightest immunity) compared with the other groups. The effect of storage period on duckling body weight at age of one day was also studied. Data indicated that thrid group (storage periods 8 days) achieved significantly (P ≤ 0.01) highest body weight (76 g). It could be concluded that storage of fertile duck eggs should not exceed 8 days to avoid excessive loss of egg water that impair the albumen contents which needed by the developing embryo for growth during incubation. The storage also, affected the transfer of maternal immunity to the embroyes and the hatched duklings.

EFFECT OF EGG STORAGE PERIOD ON THE IMMUNITY AND THE HATCHED DUCKLING'S PERFORMANCE

This study was conducted at the French Group Company at Al-Sadat City in Menoufia Governorate. The hundred forty-eight fertile eggs were collected from 200 females of Pekin ducks (Anas platyrhynchos) at the age of (26 weeks of production), which mated by artificial insemination with 30 male of Muscovy ducks (Cairina moschata) to produce Molar ducks. Eggs were divided into four equal treatments (each of 96 eggs) and subjected to different storage periods (0, 4, 8 and 12 days) to determine the effects of different storage periods on egg weight loss, hatchability, hatch window, duckling quality, duckling immunity, and its body weight were measured for the different treatments. The results revealed that there were insignificantly differences (p ≤ 0.05) in egg weight loss by the different preincubation egg storage period. Storage eggs for 0 days had the highest hatchability percentage (92.2 %) compared to other experimental groups. Data demonstrated that storage eggs for 12 days achieved the largest hatch window (17:30 hours) when compared with 0, 4 and 8 days of storage. The relationship between storage period and duckling quality revealed that storage eggs for 0 days achieved the highest quality compared to the other groups. Immunity also, was affected by storage period (0 days was the highest immunity) compared with the other groups. The effect of storage period on duckling body weight at age of one day was also studied. Data indicated that third group (storage periods 8 days) achieved significantly (P ≤ 0.01) highest body weight (76 g). It could be concluded that storage of fertile duck eggs should not exceed 8 days to avoid excessive loss of egg water that impair the albumen contents which needed by the developing embryo for growth during incubation. The storage also, affected the transfer of maternal immunity to the embryos and the hatched ducklings.

Effect of different storage periods on some quality properties of filled fresh pasta

Bu çalışmada, değirmencilik yan ürünleri olan buğday kepeği (BK) ve buğday ruşeymi (BR) nin dolgusuz ve dolgulu yaş makarna üretiminde kullanımının depolama süresince makarnaların bazı fiziksel, kimyasal, mikrobiyolojik ve duyusal özellikleri üzerine etkisi araştırılmıştır. Bu amaçla %5, 10, 15 ve 20 (w/w) oranlarında BK ve BR, buğday unu ile yer değiştirilerek dolgusuz ve dolgulu yaş makarna üretiminde kullanılmış, elde edilen yaş makarna örnekleri modifiye atmosfer paketleme (MAP) uygulanarak 30 gün +4 oC ‘de depolanmıştır. BR ilaveli makarna örnekleri, BK ilaveli olanlara göre daha düşük ağırlık artışı ve suya geçen kuru madde miktarı (SGMM) vermiştir. Artan oranlarda BK ya da BR kullanımı, ağırlık ve hacim artışı ile SGMM değerlerini yükseltmiştir. Depolama süresince dolgusuz ve dolgulu yaş makarnaların ağırlık artışı ve hacim artışı değerlerinde istatistiki bir farklılık gözlenmezken; SGMM de artış, antioksidan aktivite ve fitik asit miktarlarında düşüş belirlenmiştir. MAP uygulanmış yaş makarna örneklerinin normal paketlenmiş makarna örneklerine göre mikrobiyolojik kalitelerinin çok daha üstün olduğu saptanmıştır. Yaş makarna üretiminde en iyi sonuç sırasıyla %10 BK ve %15 BR ilavesi ile elde edilmiştir.

PENGARUH KONDISI DAN PERIODE SIMPAN TERHADAP PERKECAMBAHAN BENIH CEMPAKA WASIAN (Magnolia tsiampaca (Miq.) Dandy

Cempaka wasian ( Magnolia tsiampaca (Miq.) Dandy) is one of the most popular carpentry woods in North Sulawesi. The development of cempaka wasian species is constrained by the inability of seeds to be stored for a long period of time . The purpose of this research was to determine the effect of different storage periods and conditions towards seed germination of cempaka wasian. The experimental design used completely randomized factorial design with two main factors as follow: s torage c ondition and s tor a ge p eriod s . The results showed that the conditions and storage periods had an effect on seed water content, germination rate, and seed vigor index of cempaka wasian seeds, but it d id not affect the germination capacity . The storage conditions of air condition room (tempe r a t ur e 18oC ― 21oC, relative humidity 51 percent ― 61 percent ) was the most ideal condition for storing cempaka wasian seeds . Cempaka wasian seeds are included in the category of intermediate seed because the treatment of the storing period for 4 (four) weeks d id not affect the germination capacity even though the water content of the seeds has decreased.

Effect of Storage Conditions and Storage Periods on Seed Germination of Kesambi (Schleichera oleosa(Lour.) Merr)

The availability of kesambi seed for planting is not always sufficient, so the proper seed storage to ensure the availability and maintenance the seed quality need to know. The purpose of this research was to determine the effect of different storage periods and storage conditions towards seed germination of kesambi. This experimental design used completely randomized design, consists of with 2 factors, storage conditions (room temperature, sealed jar consist of silica gel and low temperature) and storage periods (30, 60, 90 days) with 3 replications for each treatment. The results showed that the germination percentage, germination rate, the initiation of germination and shoots emergence were affected by the storage conditions, while storage periods and the interaction of the factors only affected the germination rate. The highest germination (55 %) found in seeds stored in sealed jars contain of silica gel for 30 days, with a germination rate of 7 days and the initiation of germination and shoots emergence of 12 days and 17 days, while the lowest value were found in seeds which stored at low temperatures.

EFFECT OF SOME STORAGE CONDITIONS ON SOME COOKING AND EATING RICE QUALITY CHARACTERISTICS

Egyptian paddy rice Sakha 102 and Giza 179 as a short variety and Egyptian Yasmine local aromatic as a long variety were used to discuss investigate the effect of different initial moisture content (12, 14, 16 and 18%) after storage period (12 months) on cooking and eating characteristics of rice grain. Significant differences between the three rice varieties were observed for all studied characters except cooking time character. Also the effect of different storage period (3,6,9,12 months) at constant initial moisture content in same storage conditions and well ventilated were-house for on cooking and eating characters for three Egyptian variety were also investigated. No significant differences in most studied characters mean values were estimated up to 6 months storage period on virtually all measured characters.

EGG STORAGE OF Podisus nigrispinus (HEMIPTERA: PENTATOMIDAE) PREDATORS AT LOW TEMPERATURES

ABSTRACT Podisus nigrispinus are bedbug predators that are used as biological control agents of defoliating larvae in eucalypt plantations. The mass rearing of natural enemies produces large numbers of insects, but the number of predators produced may not coincide with the timing of the outbreaks of pest populations in the field. The aim of this study was to evaluate the effects of different storage periods on the eggs of P. nigrispinus at low temperatures of 5, 13 and 15ºC. The treatments consisted of periods of 5, 10, 15 and 20 days of storage of predator eggs at each temperature indicated. After the different periods of storage, the eggs were removed, and the egg viability, the survival and duration of nymphal instars and the sex ratio of emerged adults were evaluated. Egg storage at 5ºC reduced the percentage of hatched eggs, while viability values close to 50% were observed for storage periods of up to 10 days at 13ºC and up to 15 days at 15ºC. For these treatments, the survival rates of nymphs were similar to those of the control. The different storage periods had no effect on the duration of the nymphal stage or the sex ratio of P. nigrispinus at any of the temperatures. Therefore, the storage temperature of 5ºC caused the death of the majority of the embryos, while it is possible to store P. nigrispinus eggs up to 10 and 15 days at 13 and 15ºC, respectively.

Germinação de sementes de quinoa com diferentes períodos de armazenamento

This work aimed to evaluate the effect of different storage periods and the number of days to the germination of quinoa seeds. The seeds were obtained from plants cultivated under field conditions in the agricultural year of 2012/2013, in the municipality of Marechal Cândido Rondon, PR. The survey was conducted in the Seeds Technology Laboratory, at the State University of West Parana - UNIOESTE. The treatments consisted of the association between six storage periods (36, 85, 119, 146, 177 and 270 days) and eight days of germinated seeds counting, kept at 25 °C without photoperiod in four replicates of 100 seeds each. Germinating boxes (Gerbox) were used, containing germination paper on which the seeds were disposed. The quinoa seeds germination decreases with storage time increase, which also slows the germination. The count of the number of germinated seeds has to be performed on the eighth day after the assembly of the Standard Germination Test in quinoa. Normal 0 21 false false false PT-BR X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:Tabela normal; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:Calibri,sans-serif; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-fareast-language:EN-US;}

The Effects of Storage Duration on Biodiesel Derived from Waste Cooking Oil

The use of fossil fuels as energy sources has grown to significantly be likely to have a major environmental impact. Reduction of world oil reserves and increasing environmental concerns have prompted alternative is found and renewable source of energy called biodiesel. Biodiesel fuel from vegetable oil is considered as the best candidates for diesel fuel replacement in diesel engines because of its closer. Fuel prices are going up day by day in the world. Thus, the means and methods have been trying for years to get fuel alternative outcomes. This study investigated the effects of different storage periods used in quality biodiesel blends (B5, B10, B15) of waste cooking oil and diesel fuel under low temperature and the temperature of the environment. Biodiesel samples were stored in glass containers under indoor conditions, and outdoor conditions for 10 weeks in total. These samples were monitored on a weekly basis through the test properties. The experimental density, viscosity, acid value, water content and flash point discussed in detail. Biodiesel storage at low temperatures is suitable and more advantageous because the impact on the physical properties is minimal and beneficial to slow down the degradation of biodiesel and storage.

Effect of Different Storage Period on Lactic Acid Bacterias from Goji Yogurt and Goji Yogurt with Honey

Lactic acid bacterias (LAB: Streptococcus thermophilus-ST, Lactobacillus bulgaricus-LB) are well known in the food technology area for their ability to produce lactic acid (LA) from carbohydrates throught fermentation. In case of goji yogurt the interaction between the two species of LAB has influence on the fermentation period and LA quantity. LAB’s are widely used in the food industry because their growth in the dairy products lowers the carbohydrate content, they can also drop the pH values under 4.0, values were common pathogens are inhibited, and because of all these properties they are capable to prolong the shelf life. The present study aims to observe the evolution of LAB’s – ST and LB, from goji yogurt (7%) (A) and goji yogurt (7%) with honey (B) during the shelf life in corelation with other physico-chemical properties such as sugar content, fat content and dry matter. The samples for the evaluation were taken in the first day of storage, at the middle of storage period and in the last day of storage.