scholarly journals Microbiological and physicochemical properties of commercial seal tampered refrigerated fruit juices

2016 ◽  
Vol 4 (1) ◽  
pp. 21
Author(s):  
Olusola Oluwole ◽  
Oluwole David ◽  
Christopher Falegan ◽  
Biodun Awojuyigbe ◽  
Olatunji Olajide
Keyword(s):  
Physicochemical Properties ◽  
Fruit Juice ◽  
Citrus Fruit ◽  
Storage Period ◽  
Apple Fruit ◽  
Fruit Juices ◽  
Pineapple Juice ◽  
Orange Fruit ◽  
Total Bacteria

<p>Microbial and physicochemical properties of seven branded, seal tampered refrigerated fruit juices were carried out in this study using standard methods. Coliform counts ranged from 2.079 to3.093 log<sub>10</sub>cfu/ml over the storage period with pineapple juice and citrus juice having the highest and least coliform count respectively. Total bacteria count in the juice ranged from 7.009 to 8.243 log<sub>10</sub>cfu/ml. Citrus fruit juice however had the highest staphylococcal count while pineapple juice had the least (2.344 to 3.881log<sub>10</sub>cfu/ml). Also, osmophilic yeast count ranged from 2.017 to 3.903log<sub>10</sub>cfu/ml, having the highest load in orange fruit juice and lowest load in citrus fruit juice. The pH of the juice samples ranged from 2.9 to 4.2 during the period of refrigeration. Conductivity was highest in apple fruit juice and lowest in orange nectar pulp fruit juice. The total dissolved solids ranged from 0.29 to 1.95 over storage and was recorded highest in apple juice and lowest in orange nectar pulp fruit juice. Turbidity ranged from 5.8-200. These results indicate a reduction in the quality of fruit juices after 5 days of opening and thus reveals that both spoilage and pathogenic organisms could proliferate in juices despite refrigeration.</p>

scholarly journals Comparative effects on storage period of varieties Pineapple fruits

2015 ◽  
Vol 2 (3) ◽  
pp. 395-410 ◽  
Author(s):  
Shah Md Yusuf Ali ◽  
Md Ahiduzzaman ◽  
Sharmin Akhter ◽  
M Abdul Matin Biswas ◽  
Nafis Iqbal ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Storage Period ◽  
Biochemical Properties ◽  
Overall Acceptability ◽  
Pineapple Juice ◽  
Physico Chemical ◽  
Pineapple Fruit ◽  
Sensorial Attributes ◽  
The Comparative Study

Pineapple is considered as one of the most wanted tropical fruits and it is widely taken for fresh consumption as well as their flesh and juice are used for preparation of different product in Agro-processing industries. For such industrial processes, it is important to know the information of characteristics changes of pineapple during day after storage. Four varieties of pineapple were collected from different areas of Bangladesh named Honey Queen (H.Q), Giant Kew (G.K), Asshini and Ghorasal. Some Physico-chemical properties (weight loss, moisture content, ash and edible portion, pH, TSS, titrable acidity (TA), total sugar, reducing sugar) biochemical properties (ascorbic acid) and sensorial attributes (color, odor, firmness, appearances, sweetness and overall acceptability) of pineapple juice were studied during day after storage. This study examined the Comparison of different varieties of pineapple fruit characteristics and sensory quality of the pineapple fruits during storage. It was shown that there was a significant changes between the storage periods in relation to different varieties of fruits. The firmness of pineapple fruits were in outside and inside to be 0.21 to 0.27 N/m2 and 0.06 to 0.10 N/m2, respectively. The pH values of different varieties were found to be in the range of 4.30 to 4.36. The highest and lowest sweetness index were estimated to be 36.30 and 22.15 for Honey Queen and Asshini respectively. The highest and lowest magnitude of sugar contents of four pineapple varieties were found to be in the range of 14.16 to 15.8 mg/100g.The average TSS values were found to be 15.12%, 12.33%, 13.14% and 12.95% for H.Q., G.K., Asshini and Ghorashal, respectively. The comparative study indicated the characteristics of different varieties of pineapple changes during after storage.Res. Agric., Livest. Fish.2(3): 395-410, December 2015

Effect of 60Co γ-Irradiation on Physicochemical Properties of Adlay During Storage Period

2019 ◽  
Vol 15 (8) ◽  
Author(s):  
Guolin Li ◽  
Xiuyan Zheng ◽  
Daomei Huang ◽  
Xi Chen ◽  
Fanbo Meng ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Physicochemical Properties ◽  
Volatile Compound ◽  
Storage Period ◽  
Agricultural Products ◽  
Cool Temperature ◽  
Γ Irradiation ◽  
Treatment Groups ◽  
Fatty Acid Compositions

Abstractγ-Irradiation is applied to many agricultural products as a method for quality control. This study investigated the influence of γ-irradiation on physicochemical properties of adlay. Adlay samples were treated with 0 to 4.0 kGy 60Co γ-irradiation and subsequently stored at cool temperature (8 to 10 °C). Hardness of all treatment groups showed no marked changes at 0 kGy but exhibited variations at 2.0 and 4.0 kGy. Linoleic acid (C18:2) was the most sensitive to irradiation among 11 fatty-acid compositions. Saturated fatty-acid (SFA) content was increased, whereas unsaturated fatty acid was reduced by dose augmentation. Types of volatile compound increased from 15 to 21, and the major compound n-hexanol was increased by 80.41 % after 4-kGy irradiation. Odor changes caused by doses of irradiation were more remarkable than those caused by 12 months of storage. Hence, we conclude that 1.0 kGy irradiation barely affects physicochemical properties during storage; it could be an alternative way to control quality of adlay during storage.

scholarly journals Monkey orange fruit juice improves the nutritional quality of a maize-based diet

2019 ◽  
Vol 116 ◽  
pp. 870-877 ◽  
Author(s):  
Ruth T. Ngadze ◽  
Anita R. Linnemann ◽  
Vincenzo Fogliano ◽  
Ruud Verkerk
Keyword(s):  
Nutritional Quality ◽  
Fruit Juice ◽  
Orange Fruit

scholarly journals AVALIAÇÃO DA QUALIDADE DE LARANJA PÊRA APÓS ARMAZENAMENTO COM ETILENO

2002 ◽  
Vol 20 (2) ◽  
Author(s):  
JORGE JOSÉ DO VALE OLIVEIRA ◽  
MARIA CECÍLIA DE FIGUEIREDO TOLEDO ◽  
JOSÉ MARIA MONTEIRO SIGRIST ◽  
KATUMI YOTSUYANAGI ◽  
IVÂNIA ATHIÉ
Keyword(s):  
Relative Humidity ◽  
Storage Period ◽  
Quality Parameters ◽  
Chemical Parameters ◽  
Physical Chemical ◽  
Before And After ◽  
Orange Fruit

Laranjas da variedade Pêra, previamente armazenadas durante três dias, com e sem etileno foram pulverizadas com Imazalil, Tiabendazol e a mistura de ambos, formulados ou não com cera. Em seguida, foram mantidas durante 25 dias a 4ºC ± 2ºC/90% ± 5% de umidade relativa, sendo avaliados parâmetros de qualidade da laranja, antes e ao final do armazenamento. Com exceção do atributo cor não ocorreram diferenças estatisticamente significativas nos demais parâmetros químicos e físico-químicos, independente da exposição ao etileno. O etileno foi eficiente no desverdecimento de laranjas, sem comprometer seus atributos de qualidade, e o tratamento posterior com cera contribuiu para manter inalterado o padrão de cor obtido. EVALUATION OF THE QUALITY OF PÊRA ORANGE FRUIT AFTER STORAGE IN ETHYLENE Abstract Oranges of the variety Pêra previously stored during three days with and without ethylene were sprayed with Imazalil, Thiabendazole and a mixture of both fungicides, formulated with and without wax. Following this treatment the fruits were stored during 25 days at 4ºC ± 2ºC / 90% ± 5% of relative humidity, parameters related to orange quality were evaluated before and after the storage period. With exception of the attribute color, no significative statistically differences were observed in the chemical and physical-chemical parameters, independent of the exposure to ethylene. The ethylene was effective for the degreening of orange with no action on the quality parameters. The further treatment with wax contributed to maintain the pattern of colour unchanged.

scholarly journals Efforts to produce Siamese citrus fruit out of season and fruit quality improvement through application of potassium nitrate and agrodyke fertilizer

2018 ◽  
Vol 2 (3) ◽  
pp. 48-58
Author(s):  
Ni Komang Alit Astiari ◽  
Luh Kartini ◽  
Ni Putu Anom Sulistiawati ◽  
I Nyoman Rai
Keyword(s):  
Block Design ◽  
Organic Fertilizer ◽  
Citrus Fruit ◽  
Potassium Nitrate ◽  
Fertilizer Treatment ◽  
Nitrate Treatment ◽  
Combination Treatments ◽  
Randomized Block Design ◽  
Orange Fruit

The research aimed to find out the efforts to produce off-season orange fruit and increase the quality of fruit through the application of potassium nitrate and agrodyke organic fertilizer. The study used a factorial randomized block design with 2 treatment factors. The first factor is the flower induction application using potassium nitrate (K) consisting of 3 levels, namely (K0 = 0 g/tree), (K1 = 20 g/tree), and (K2 = 40 g/tree). While the second factor is the application of agrodyke organic fertilizer (P) consisting of 4 levels, namely (P0 = 0 g / tree), (P1 = 15 g/tree), (P2 = 30 g / tree) and (P3 = 45 g/tree). There are 12 combination treatments and each of them is repeated 3 times so that 36 tree plants are needed. The results showed the interaction between potassium nitrate treatment with agrodyke organic fertilizer treatment had no significant effect on all observed variables. Potassium nitrate treatment and agrodyke organic fertilizer can significantly improve the quality of orange citrus fruit out of season physically. In the treatment of potassium nitrate 40 g/tree, the weight of the harvested fruit per tree was obtained, the weight per fruit and the highest fruit diameter were 13703.90 g; 99.92 g and 6.81 cm or an increase of 62.24%; 16.32% and 9.49% compared with no treatment of potassium nitrate which is 8446.60 g; 87, 42 g and 6.22 cm.

scholarly journals Salicylic Acid and Putrescine to Reduce Post-Harvest Storage Problems and Maintain Quality of Murcott Mandarin Fruit

Agronomy ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 115 ◽  
Author(s):  
Hassan A. Ennab ◽  
Mervat A. El-Shemy ◽  
Shamel M. Alam-Eldein
Keyword(s):  
Weight Loss ◽  
Salicylic Acid ◽  
Fruit Quality ◽  
Citrus Fruit ◽  
Storage Period ◽  
Soluble Solids ◽  
Post Harvest ◽  
Deterioration Rate ◽  
Reduce Weight Loss

Natural products have been used to improve citrus fruit quality and storability, which increase the fruit marketing period and exportation to distant markets. This study was conducted to evaluate the role of salicylic acid and putrescine on reducing post-harvest loss and maintaining the quality of stored Murcott mandarin. Fruit were harvested at 297–300 days from full bloom, and five 5-min dipping treatments were applied; salicylic acid (200 and 400 ppm), putrescine (50 and 100 ppm), and the control. One group of fruit was stored at 5 ± 1 °C and 90–95% relative humidity (RH), and the other group was stored at 23 ± 1 °C and 60–70% RH for 45 days. Quality attributes were recorded at harvest, 15, 30, and 45 days of storage. Weight loss and decay were significantly decreased with the application of salicylic acid and putrescine. Both materials were also effective maintaining fruit firmness, total soluble solids (TSS), acidity, TSS: acid ratio, and ascorbic acid during storage. Salicylic acid, especially at 400 ppm was more effective to reduce weight loss and decay, and to maintain fruit quality in comparison to putrescine treatments. It could be concluded that salicylic acid and putrescine are effectively delaying post-harvest deterioration rate and extending the storage period of Murcott mandarin fruit with acceptable quality.

Plaque and salivary pH changes after consumption of fresh fruit juices

2006 ◽  
Vol 30 (1) ◽  
pp. 9-13 ◽  
Author(s):  
Lata Kiran Banan ◽  
Amitha Hegde
Keyword(s):  
Healthy Eating ◽  
Room Temperature ◽  
Fruit Juice ◽  
Dietary Habits ◽  
Grape Juice ◽  
Fruit Juices ◽  
Fresh Fruit ◽  
Pineapple Juice ◽  
Concept Of Health ◽  
Salivary Ph

The concept of health has prevailed for centuries and the dietary habits are apparently changing with modernization. "Healthy eating" is now perceived to be important. The desirability of a healthful lifestyle has led to an increased consumption of juices. Drinking large amount of fruit juice is frequently practiced these days and the consumption of these juices is further modified with behavioral habits such as swishing and frothing the drinks around the mouth, sucking frozen fruit juices, use of feeder cups at bed time etc. Hence this study was conducted to find the acidogenic potential of the commonly consumed fresh fruit juices (Grapes, orange, and pineapple) and the juices stored at various temperatures (room temperature, refrigerator and freezer) on the plaque and saliva at various intervals. It was observed that grape juice was more acidogenic compared to orange and pineapple juice. Frozen fruit juices caused a greater drop in plaque and salivary pH followed by the refrigerated juice.

scholarly journals Microbial Quality of Selected Commercial Fresh Fruit Juices Sold in Mysore City

2014 ◽  
Vol 8 ◽  
pp. 30-34 ◽  
Author(s):  
S Divyashree ◽  
Prakash Jamuna ◽  
N Brabahavanthis
Keyword(s):  
Chemical Properties ◽  
Poor Quality ◽  
Fruit Juices ◽  
Microbial Quality ◽  
Public Places ◽  
Pineapple Juice ◽  
Quality Of Water ◽  
Sweet Lime ◽  
Physico Chemical

Fruit juices are common man’s beverages and sold at public places. Since they are known for carrying heavy microbial load, the present investigation was undertaken to enumerate and identify the microorganisms in fruit juices (sweet lime, orange and pineapple) selected from three different street vended shops (source A, B and C) in Mysore. The juices were analyzed for the microbial quality for type of organisms and number of colonies by serial dilution technique, pour plate method,gram’s staining method and staining for fungi; and physico-chemical properties. Results showed that the pineapple juice from two sources was highly contaminated with bacterial pathogens (25×104CFU/mland 20×104CFU/ml). All samples were contaminated with faecal streptococci. In source-B and C, all juices showed high counts of fungal colonies (Aspergillus, Penicillium, Fusarium and yeast). It is contended that contamination was mainly due to poor quality of water used for dilution as well as prevailing unhygienic conditions related to washing of utensils and maintenance of the premises. The result showed the poor hygienic quality of street vended fruit juices and the possible risk to the consumers. DOI: http://dx.doi.org/10.3126/jfstn.v8i0.11746 J. Food Sci. Technol. Nepal, Vol. 8 (30-34), 2013

scholarly journals Microbiological analysis of pasteurized and fresh fruit juice sold in Rawalpindi of Pakistan

2013 ◽  
Vol 48 (3) ◽  
pp. 185-192 ◽  
Author(s):  
SA Batool ◽  
SS Tahir ◽  
N Rauf ◽  
R Kalsoom
Keyword(s):  
Fruit Juice ◽  
Microbiological Quality ◽  
Total Coliform ◽  
Viable Count ◽  
Fruit Juices ◽  
Local Market ◽  
Microbiological Analysis ◽  
E Coli ◽  
Bacteria And Fungi

Freshly prepared and pasteurized fruit juices sold by vendors in local market of Rawalpindi city from 10 locations were analyzed for the microbiological quality. Total viable count (TVC), total coliform, faecal coliform, molds and the presence of pathogenic microorganisms such as E. coli, Pseudomonas, Staphylococcus aureus, Salmonella, and fungi like Aspergillus, Pencillum, Rhizopus were determined .In open fruit juices available in city were highly contaminated with bacteria and fungi. E. coli, Salmonella, Staphylococcus, and Pseudomonas were isolated with different frequency. Aspergillus, Pencillum and Rhizopus were also found in juices especially Aspergillus was with high percentages. The pasteurized juices have less contamination as compared to the fresh juices samples. The number and type of microorganisms recovered from the freshly squeezed fruit juices made them unsafe for drinking. The results of this study demonstrate the unhygienic quality of popular types of market vended freshly squeezed fruit juices and their risk to the consumers. DOI: http://dx.doi.org/10.3329/bjsir.v48i3.17329 Bangladesh J. Sci. Ind. Res. 48(3), 185-192, 2013

scholarly journals PENGARUH PENAMBAHAN SARI CEMPEDAK TERHADAP UMUR SIMPAN DAN NUTRISI SARI BUAH NANAS (Effect of Addition Cempedak Juice For Shelf Life and Nutrition Pineapple Juice)

2017 ◽  
Vol 11 (1) ◽  
pp. 30
Author(s):  
Abdullah Bin Arif ◽  
Setyadjit Setyadjit ◽  
Irpan Badrul Jamal ◽  
Heny Herawati ◽  
Suyanti Suyanti
Keyword(s):  
Vitamin C ◽  
Shelf Life ◽  
Fruit Juice ◽  
Soluble Solids ◽  
Life Test ◽  
Total Acid ◽  
Pineapple Juice ◽  
The People ◽  
Materials Used

<p>Sari buah nanas merupakan sari buah yang digemari oleh masyarakat. Namun umur simpan sari buah nanas cukup singkat. Oleh karena itu dibutuhkan teknologi untuk memperpanjang umur simpan sari buah nanas. Penambahan sari cempedak pada sari buah nanas dapat memperbaiki umur simpan dan mutu sari buah nanas. Penelitian ini bertujuan untuk mempelajari pengaruh penambahan sari cempedak terhadap umur simpan dan kelayakan sari buah nanas. Bahan yang digunakan dalam penelitian ini yaitu buah nanas dan cempedak. Sari buah nanas dan nanas-cempedak disimpan pada suhu 15, 30 dan 450C selama 2 bulan. Pengamatan yang dilakukan terdiri atas vitamin C, total asam, total padatan terlarut, komponen flavor, rasa, aroma, warna dan kelayakan. Pendugaan umur simpan sari buah menggunakan metode Accelarated Shelf Life Test (ASLT). Hasil penelitian menunjukkan bahwa kandungan vitamin C, asam sorbat dan asetaldehida sari buah nanas cempedak lebih tinggi dibandingkan sari buah nanas. Umur simpan sari buah nanas-cempedak 41 hari lebih lama dibandingkan sari buah nanas. Sari buah nanas dan nanas-cempedak masih layak untuk dikonsumsi hingga 2 bulan.</p><p>Kata kunci :Sari buah nanas, sari buah nanas-cempedak, umur simpan, nutrisi</p><p>English Version Abstract</p><p>Pineapple juice is a fruit juice that is favored by the people. The shelf life of pineapple juice is quite short. Therefore, it needs the technology to extend the shelf life of pineapple juice. The addition of cempedak juice at pineapple juice has expected to extend the shelf life and improve quality of pineapple juice. This research aimed to study the effect of the addition cempedak juice for shelf life of pineapple juice. The materials used in this research was the fruit of pineapple and Cempedak. Pineapple juice and pineapple- Cempedak were stored at the temperature of 15, 30 and 45 0C for 2 months. Observations were carried out on of vitamin C, total acid, total soluble solids, flavor compounds, taste, flavor, color and edibility. The estimation of shelf life for the juice used a method Accelarated Shelf Life Test (ASLT). The results showed that the content of vitamin C, sorbic acid and acetaldehyde pineapple-cempedak juice higher than pineapple juice. Shelf life of pineapple-cempedak juice was 41 days longer than pineapple juice. Pineapple juice and pineapple-cempedak juice was still fovorable for the consumption until 2 months.</p><p>Keywords :pineapple juice, pineapple-cempedak mixed juice, shelf life, nutrition</p>

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