scholarly journals Effect of solar drying on proximate composition of two varieties of ginger rhizomes for blanched and unblanched treatments

2021 ◽  
Vol 46 (4) ◽  
pp. 41-48
Author(s):  
Muofunanya Umunna ◽  
Joshua Kayode

Ginger (Zingiber officinale Roscoe) of two verities UG I ('Tafin-Giwa', a yellowish variety with plump rhizomes) and UG II ('Yatsun-Biri', a black or dark variety with small compact rhizomes), were analysed to identify its proximate composition. The effects of drying as a processing technique on ginger were investigated with respect to the proximate composition of the produce. The UG I and UG II were collected, sorted (whole, peeled and unpeeled) and (slice, peeled and unpeeled), and were subjected to Unblanched and Blanched (50℃ at 3,6 and 9 min respectively) treatments and dried using solar dryer for a period of one month. The initial moisture content of UG I and UG II were 71.12% and 72.47% respectively, the final moisture content were reduced to 7.02% SUP (Unblanched) and 5.52% SUP (Blanched at 9 min) for UG I, while that of UG II were 4.82% SP (Unblanched) and 5.85% WUP (Blanched at 3 min). For Carbohydrate content, 61.38% was noted to be the lowest level at Unblanched (Whole peeled), and 68.37% indicates higher CHO content at Blanched 50℃ at 9 min (Split Unpeeled) treatments for UG I samples. Similarly, for UG II, CHO's presence was low at 56.01% for Unblanched (Whole peeled) and high at 76.32% for Blanched on the temperature of 50°C at 9 min (Whole peeled) treatment. Ash content was observed to be low at 4.68% for Blanched 50℃ at 3 min (Split Unpeeled) and high at 6.47% for Unblanched (Whole peeled) treatment for UG I samples, and 3.82% low for Blanched on the temperature of 50°C at 9 min (Split peeled) with higher ash content of 7.69% Unblanched (Split Unpeeled) treatment for UG II samples.

1976 ◽  
Vol 39 (4) ◽  
pp. 244-245 ◽  
Author(s):  
G. BEETNER ◽  
T. TSAO ◽  
A. FREY ◽  
K. LORENZ

Triticale kernels were extruded using a Brabender Plasticorder extruder with ¾-inch rifled barrel and 1:1 flight depth ratio screw. Whole grain samples were extruded at initial moisture contents of 15, 20, and 25%. Debranned samples were extruded at an initial moisture content of 22%. Barrel temperatures of 350, 400, and 450 F and nozzle openings of 1/8 inch and 1/16 inch were used. The products were analyzed for thiamine and riboflavin content. Results were corrected for final moisture content and expressed as fraction retained. A multiple regression was done to determine the relationship between independent and derived variables, and the retention. Riboflavin retention was correlated simply as a function of barrel temperature. Thiamine retention of the debranned material was correlated as a function of nozzle size and barrel temperature. Thiamine retention of the whole grain samples was correlated for nozzle size, first and second order temperature effects, and confounding between nozzle size and temperature.


2016 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Febby J Polnaya ◽  
Rachel Breemer

The purpose of this research was to characterize chemical and sensory properties (color, texture, taste and liking) of starch-based sago, cassava, sweet potato and cocoyam cookies. Analysis of cookies include moisture content, ash, fat, protein, crude fiber and sensory analysis including color, texture, taste and likeness). The proximate composition indicated that the water content of cookies varied between 1.48 to 2.05%, ash content of 0.65 to 0.72%, 19.23 to 21.76% of fat, crude fiber from 0.41 to 0.71% and 1.33 to 2.42% of total protein. Based on organoleptic tests, the color of cookies was yellow to brownish-yellow, with crispy texture, the taste was sweet and were mostly preferred.


2017 ◽  
Vol 5 (3) ◽  
pp. 90
Author(s):  
Susanti Musa ◽  
Grace Sanger ◽  
Henny Adeleida Dien

This study was conducted to determine the proximate composition, bioactive compound and total plate count (TPC) in Gracilaria edulis seaweed. This research used descriptive explorative method. The results showed the average value of moisture content (77.7%); protein content (39.4%); fat content (8.1%); carbohydrates by difference (71.7%); ash content (20.7%) and very low bacterial count. Phytochemical test results show this seaweed contains alkaloids, saponins, flavonoids, and triterpenoids compounds. Penelitian ini dilakukan untuk mengetahui komposisi proksimat, senyawa bioaktif dan angka lempeng total (ALT) pada rumput laut Gracilaria edulis. Penelitian ini menggunakan metode penelitian deskriptif eksploratif. Hasil penelitian menunjukkan nilai rata-rata kadar air (77,7%); protein (39,4%); kadar lemak (8,1%); karbohidrat (71,7%); kadar abu (20,7%) dan jumlah bakteri yang sangat rendah. Hasil uji fitokimia menunjukkan rumput laut ini mengandung  senyawa alkaloid, saponin, flavonoid, dan triterpenoid.


2021 ◽  
Vol 1 (1) ◽  
pp. 29-39
Author(s):  
Raja B. D. Sormin ◽  
Edir Lokollo ◽  
Febe F. Gaspersz ◽  
Vicko F. J. Tahalea

This study aims to determine the proximate and total bacterial of dry salted scad fish (Decapterus sp.)dried using a closed solar drying sistem. The research method begins with fish weed in ‘butterfly’ thenwashed using flowed water and immersed in 15% salt solution for 30 minutes. The drying method was aclosed sun drying cabinet sistem, with 3 drying racks named Rack 1, Rack 2 and Rack 3 starting from thebottom. The dried salted fish was analyzed its proximate consisting of moisture content, ash content, fatcontent and protein content, as well as bacterial tests using Total Plate Count (TPC). The results showedthat the proximate values on Rack 1, Rak2, and Rack 3 were water content of 25.58%, 20.39%, and17.80% respectively; ash content of 9.64%, 9.69% and 7.71% respectively, fat content 8.08%, 11.40%and 15.16%, respectively and protein content 53.73%, 58.10%, and 59.11%. respectively. Meanwhile,the total plate count (TPC) value of dried salted layang fish (Decapterus sp) on Rack 1, Rak2, and Rack 3was 2.73 log x CFU / g or 5.4 x 102 CFU / g, 2.74. logx CFU / g or 5.5 x 102 CFU / g, and 2.74 logx CFU / gror 5.9 x 102 CFU / gr, respectively. The best place to put fish in the dryer is on Rack 3 as this is indicatedby the low moisture content. The TPC value was still within the value limit required by the SNI.


2020 ◽  
Author(s):  
Victor Konovalov ◽  
Anna Konovalova ◽  
Vladimir Konovalov ◽  
Sergey Denisov ◽  
Gali Gumarov

The purpose of this work is to substantiate the parameters of the boiler unit, which ensures the cremation of manure using microwave radiation. The substantiation of the amount of heat released during the burning of chicken manure at the industrial keeping of poultry in the conditions of sharply continental climate on the basis of minimization of product utilization values - ash content of wastes and pollution of smoke emissions is presented. Using the obtained regression models of magnetron emission power, moisture content of the burnt manure mass, mass air consumption for the specified product utilization parameters, the analysis of the relationship between the obtained parameters is made. Correlation analysis has shown a high correlation between the amount of heat released during the combustion of manure and the concentration of carbon monoxide in the smoke emissions. Rationally, the value of carbon monoxide content in the flue gases is 3.9%, corresponding to the amount of heat released 2.1 MJ/kg at the combustion of a kilogram of manure at the ash content of the residue of 18.4% and the initial moisture content of the manure of 38.4%. It provides power of radiation of magnetron 400 W on 1 kg of a waste and the mass flow rate of air of 13.8 kg/h.


2018 ◽  
Vol 7 (6) ◽  
pp. 2363 ◽  
Author(s):  
Sudhakar Pola ◽  
Priyanka K. ◽  
Angela E. Peter ◽  
Sandeep B.V. ◽  
Rajeswari M. ◽  
...  

Tree nuts form an essential part of our diet. They are rich in proteins, fats and an array of micro and macronutrients and are also palatable and considered as a delicacy. Among all the tree nuts, the almond is often referred to as the king of nuts. This is because it contains high amounts of nutritive elements like monounsaturated fatty acids, minerals such as magnesium and copper, α-tocopherol and fiber making it an integral part of the diet. Almonds are known to reduce oxidative stress, inflammation and the risk of cardiovascular diseases and diabetes. The present study endeavored to determine the proximate composition of locally available tree almonds, Prunus amygdalus. The moisture content, ash value, iron, phosphorous, calcium, protein, fat and fiber levels were estimated by standard protocols. The results obtained were then correlated with previously described studies. The findings of this study were in line with previous studies. Locally available P. amygdalus was found to be a rich source of protein, fat, calcium and phosphorous. The moisture and ash content were low. The fiber content is moderate and amount of iron is considerably low. This makes locally available almonds a suitable, accessible and vital part of the diet.


Author(s):  
D. P. MarkManuel ◽  
Jackson Godwin

This study investigated the effects of culinary methods (boiling and frying) on the proximate composition of an edible insect commonly known as African Palm Weevil (R. phoenicis) Larva(e). The proximate composition (moisture, ash, protein, crude fibre, fat and carbohydrate contents) were determined using standard methodology of the Association of Analytical Chemists (AOAC). Boiling increased the moisture and ash content but, decreased the protein, fat, carbohydrate (p0.05) and the fibre content compared to the raw sample. On the other hand, frying increased the protein and ash contents (p 0.05) but decreased the moisture, fat, carbohydrate and fibre contents compared to the raw. The decrease in moisture content led to a corresponding increase in the protein, and ash contents of the fried sample, which indicates high protein and mineral levels of the larvae. Also, the lowest moisture content recorded in the fried sample compared to the raw and boiled sample was an indication of reduction of microbial spoilage, and longer storage shelf life of this edible larva. Therefore, frying is recommended as the best culinary method for healthy diet. This study investigated the effects of culinary methods (boiling and frying) on the proximate composition of an edible insect commonly known as African Palm Weevil (R. phoenicis) Larva(e). The proximate composition (moisture, ash, protein, crude fibre, fat and carbohydrate contents) were determined using standard methodology of the Association of Analytical Chemists (AOAC). Boiling increased the moisture and ash content but, decreased the protein, fat, carbohydrate (p>0.05) and the fibre content compared to the raw sample. On the other hand, frying increased the protein and ash contents (p<0.05) but decreased the moisture, fat, carbohydrate and fibre contents compared to the raw. The decrease in moisture content led to a corresponding increase in the protein, and ash contents of the fried sample, which indicates high protein and mineral levels of the larvae. Also, the lowest moisture content recorded in the fried sample compared to the raw and boiled sample was an indication of reduction of microbial spoilage, and longer storage shelf life of this edible larva. Therefore, frying is recommended as the best culinary method for healthy diet.


2019 ◽  
Vol 8 (1) ◽  
pp. 25-33
Author(s):  
Ishtiak Ahmed Chowdhury ◽  
Md Rakibul Hasan ◽  
Suraiya Parveen ◽  
Shuvra Kanti Dey ◽  
Md Baki Billah

Protein, lipid, ash and moisture content in the body muscles of two commonly available puffer fish species in Bangladesh (Leiodon cutcutia and Dichtomyctere fluviatilis) have been analysed from January 2018 to June, 2018. The puffer fish species were collected from different habitats i.e., Leiodon cutcutia from freshwater and Dichtomyctere fluviatilis from estuarine water. The percentage of the proximate composition varied in different months in both the species. In Leiodon cutcutia, moisture content fluctuated from 79.32% to 87.61% with an average of 83.75%; protein content from 6.35% to 13.31% with an average of 9.49%; lipid content from 1.57% to 2.32% with an average of 1.92% and ash content from 2.30% to 3.27% with an average of 2.84%. In Dichotomyctere fluviatilis, moisture content fluctuated from 73.77% to 84.18% with an average of 77.49%; protein content from 10.03% to 19.77% with an average of 16.80%; lipid content from 0.92% to 1.71% with an average of 1.32% and ash content from 2.77% to 3.34% with an average of 3.05%. The comparative evaluation of the nutritional value of the studied fish species revealed that the puffer fish from estuarine environment might contain higher amount of nutrients. Thus, proper utilization of this species towards sustainable management, nutritional composition and biosecurity issues will lead to achieve sustainable blue economy. Jahangirnagar University J. Biol. Sci. 8(1): 25-33, 2019 (June)


2020 ◽  
Vol 1007 ◽  
pp. 1-5
Author(s):  
Megawati ◽  
Astrilia Damayanti ◽  
Radenrara Dewi Artanti Putri ◽  
Irene Nindita Pradnya ◽  
Habib Faisal Yahya ◽  
...  

The objective of this research is to study the influence of temperature on drying and changes in carbohydrate composition during the drying. Chlorella pyrenoidosa was dried in oven at various temperatures and initial weight 2 g. The initial moisture content of Chlorella pyrenoidosa was 487.2% dry weight and the composition was hemicellulose (62.76), cellulose (2.39), and lignin (0.46% dry weight). Every 5 min, the moisture content was recorded. The critical moisture contents of Chlorella pyrenoidosa at 50, 60, and 70 °C are 7.2, 3.9, and 3.1% dry weight, respectively. Meanwhile, the equilibrium water contents are 0.53, 0.32, and 0.12% dry weight, respectively. The carbohydrate content in Chlorella pyrenoidosa cell as a result FTIR analysis indicates that the higher temperature of drying the carbohydrate content increases. Drying of Chlorella pyrenoidosa at temperatures of 50, 60, and 70 °C will decrease moisture content without disturb carbohydrate molecule, so the carbohydrate content increases. Therefore, drying of Chlorella pyrenoidosa before converting become bio-ethanol will give benefit to increase the carbohydrate content and initial rupturing of it’s cell.


1970 ◽  
Vol 20 (2) ◽  
pp. 109-115 ◽  
Author(s):  
Md Ali Hossain Shamim ◽  
Md Kawser Ahmed ◽  
Abu Tareq Mohammad Abdullah

Tenualosa ilisha from Chittagong and Khulna regions of the Bay of Bengal was analyzed which showed that proximate compositions varied among the different portions of fish body. The highest value of moisture found in dorsal portion of the fish (Khulna region) whereas the lowest value of moisture found in caudal portion of the fish (Chittagong region) were 56.59 and 54.69%, respectively. The protein content was estimated to be 20.56, 21.89, 20.29, 21.33, 20.87 and 20.50% in dorsal portion (Chittagong region), ventral portion (Chittagong region), caudal portion (Chittagong region), dorsal portion (Khulna region), ventral portion (Khulna region) and caudal portion (Khulna region), respectively. The fat content was recorded 18.66% in dorsal portion (Chittagong region), 20.28% in ventral portion (Chittagong region), 19.71% in caudal portion (Chittagong region), 18.65% in dorsal portion (Khulna region), 19.15% in ventral portion (Khulna region) and 19.00% in caudal portion (Khulna region). The percentage of ash content was highest in ventral portion of fish body from the Khulna region (1.55) and lowest in dorsal portion of fish body from the Khulna region (1.03). The highest carbohydrate content was found in caudal portion of fish from the Chittagong region (3.93%) and lowest in ventral portion of fish from the Chittagong region (1.60%). The present findings revealed that the highest protein content was recorded as in ventral portion of fish from the Chittagong region (21.89%) and the fat was highest in ventral portion of fish from the Chittagong region (20.28%). Key words: Proximate composition; Ecosystem; The Bay of Bengal DOI: http://dx.doi.org/10.3329/dujbs.v20i2.8970 DUJBS 2011; 20(2): 109-115


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