KAJIAN AKTIVITAS ANTIBAKTERI EKSTRAK KULIT PISANG RAJA (Musa Paradisiaca var. Raja) DAN SERAI (Cymbopogon Citratus) TERHADAP UMUR SIMPAN BAKSO AYAM

2022 ◽  
Vol 6 (6) ◽  
Author(s):  
Feren Feren ◽  
Sri Wahyuni ◽  
RH Fitri Faradilla
Keyword(s):  
Storage Time ◽  
Design Method ◽  
Storage Period ◽  
Control Treatment ◽  
Plate Count ◽  
Banana Peel ◽  
Total Plate Count ◽  
Organoleptic Characteristics ◽  
Randomized Design ◽  
Peel Extract

ABSTRACT The purpose of this study was to determine the interaction effect of storage time and concentration of plantain peel extract and lemongrass on organoleptic characteristics (color, aroma, texture, and elasticity) and total microbes in chicken meatballs. This study used a 2-Factorial Completely Randomized Design method. The first factor was storage time with three levels, namely 0 days (T0), 2 days (T1), and 4 days (T2. Meanwhile, the second factor was the concentration of plantain peel and lemongrass extract with three levels, namely 0% (C0), 30% plantain peel extract + 20% lemongrass extract (C1), 20% banana peel extract + 30% lemongrass extract (C2), and 25% banana peel extract + 25% lemongrass extract (C3). Observation variables were organoleptic tests which included color, aroma, texture, elasticity, and shelf life after treatment based on the results of the total plate count (TPC) calculation. The results show that the 2-day storage period with the addition of 25% plantain peel extract and 25% lemongrass extract (T1C3) was the best treatment for organoleptic characteristics (color, aroma, texture, and elasticity). Based on the results of the study, it can be concluded that the administration of plantain peel extract and lemongrass was able to maintain the quality of chicken meatballs for two different days compared to the control. Treatment with a storage period of 2 days with 25% plantain peel extract and 25% lemongrass extract (T1C3) was the best treatment that was most favored by the panelists and had the least number of microbial colonies.Keywords: Meatballs, preservatives, banana peel extract and lemongrass, storage time.ABSTRAKTujuan penelitian ini adalah untuk mengetahui pengaruh interaksi lama penyimpanan dan konsentrasi ekstrak kulit pisang raja dan serai terhadap uji organoleptik (warna, aroma, tekstur dan kekenyalan) dan total mikroba pada bakso ayam. Penelitian ini menggunakan metode Rancangan Acak Lengkap Faktorial 2 Faktor. Faktor Pertama adalah lama penyimpanan yang terdiri dari tiga taraf yaitu 0 hari (T0), 2 hari (T1) dan 4 hari (T2), faktor kedua yaitu perlakuan ekstrak kulit pisang raja yang terdiri atas tiga taraf yaitu konsentrasi 0% (C0), konsentrasi ekstrak kulit pisang raja 30% + konsentrasi ekstrak serai 20% (C1), konsentrasi ekstrak kulit pisang raja 20% + konsentrasi ekstrak serai 30% (C2), konsentrasi ekstrak kulit pisang raja 25% + konsentrasi serai 25% (C3). Variabel pengamatan yaitu uji organoleptik yang meliputi warna, aroma, tekstur, kekenyalan dan daya simpan setelah perlakuan berdasarkan hasil perhitungan jumlah total plate count (TPC). Hasil penelitian menunjukkan bahwa perlakuan lama penyimpanan 2 hari dengan penambahan ekstrak kulit pisang raja 25% dab serai 25% (T1C3) merupakan perlakuan terbaik untuk uji organoleptik (warna, aroma, tekstur dan kekenyalan). Berdasarkan hasil penelitian dapat disimpulkan bahwa pemberian ekstrak kulit pisang raja dan serai mampu mempertahankan kualitas bakso ayam selama dua hari yang berbeda dengan kontrol. Perlakuan dengan lama penyimpanan 2 hari dengan pemberianekstrak kulit pisang raja 25% dan serai 25% (T1C3) merupakan perlakuan terbaik yang paling disukai oleh panelis dan memiliki jumlah koloni mikroba paling sedikit.Kata kunci: Bakso, pengawet, ekstrak kulit pisang dan serai, lama penyimpanan

scholarly journals Quality Evaluation of Deep Frozen Scraped Coconut

CORD ◽  
2014 ◽  
Vol 30 (1) ◽  
pp. 7
Author(s):  
Samarakone H.S.M.D.S.M
Keyword(s):  
Vitamin E ◽  
Quality Evaluation ◽  
Storage Period ◽  
Control Treatment ◽  
Plate Count ◽  
Consumer Acceptability ◽  
Organoleptic Properties ◽  
Total Plate Count ◽  
Acceptable Range ◽  
Peroxide Values

Fresh scraped coconut is highly susceptible to rancidity and microbial spoilage. Consumer acceptability of frozen scraped coconut in terms of chemical, microbiological and sensorial quality for three months of storage period was aimed in this study. Scraped coconut was taken and steam blanched for 5, 10 and 15 minutes using steamer. Half of blanched coconut was mixed with Vitamin E at 500 ppm. Then it was packed in LLDPE/PET/Al pouches (200 g/pouch) and sealed and stored under frozen condition at -18°C using a domestic freezer for 3 months. Control treatment was carried out by keeping the untreated grated coconut at frozen condition. Total plate count (TPC), free fatty acid (FFA) and peroxide values (PV) were measured in two week intervals for 3 months. Sensory properties of frozen coconut samples were tested in monthly intervals. Results revealed that significantly low FFA values in all the treated samples compared to control. The concentrations were below the detectable levels of rancidity (1% as lauric acid). There was no peroxide value detected throughout the study period in both the control and treated samples. It was evident that an inverse relationship occurred between TPC values and blanching time.  No differences were seen in sensory attributes in all frozen coconut and were within acceptable range. Application of steam blanching for 15 minutes with/without addition of vitamin E on fresh scraped coconut has the best advantages to extend the shelf life for minimum of three months to preserve the organoleptic properties at domestic frozen conditions.

scholarly journals PENGARUH KONDISI HOMOGENISASI TERHADAP KARAKTERISTIK FISIK DAN MUTU SANTAN SELAMA PENYIMPANAN

2020 ◽  
Vol 18 (1) ◽  
pp. 31
Author(s):  
SARI INTAN KAILAKU ◽  
TATANG HIDAYAT ◽  
DONDY A. SETIABUDY
Keyword(s):  
Optimal Condition ◽  
Storage Period ◽  
Coconut Milk ◽  
Plate Count ◽  
Tween 20 ◽  
Practical Reasons ◽  
Homogenization Process ◽  
Total Plate Count ◽  
Randomized Design

<p>ABSTRAK<br />Produk santan awet semakin banyak digunakan masyarakat untuk<br />alasan kepraktisan. Salah satu cara untuk menstabilkan emulsi santan yaitu<br />dengan penambahan emulsifier/stabiliser dan proses homogenisasi.<br />Penelitian ini bertujuan untuk mendapatkan kondisi proses homogenisasi<br />yang dapat menghasilkan emulsi santan yang stabil dengan masa simpan<br />yang optimal. Perlakuan yang diterapkan yaitu tiga kecepatan putaran<br />(6.000, 11.000, dan 16.000 rpm) dan empat durasi homogenisasi (10, 20,<br />30, dan 40 menit). Percobaan menggunakan rancangan acak lengkap<br />(RAL) faktorial dengan tiga kali ulangan. Parameter yang diamati yaitu<br />karakteristik fisik emulsi santan yang meliputi stabilitas emulsi, viskositas,<br />dan mikroskopik santan. Kemudian diamati pula mutu santan selama<br />penyimpanan dengan menguji parameter pH, warna, kadar asam lemak<br />bebas, dan total mikroba. Emulsifier yang digunakan adalah Tween 20<br />(konsentrasi 0; 0,5; dan 1%) dan karboksi-metilselulosa-CMC (konsentrasi<br />0 dan 0,6%). Hasil penelitian menunjukkan bahwa penggunaan CMC 0,6%<br />dapat menghasilkan stabilitas emulsi yang baik (100%) sampai dengan<br />akhir pengamatan (14 hari). Kondisi proses homogenisasi yang optimal<br />diperoleh pada kecepatan putaran 6.000 rpm selama 30 menit. Mutu santan<br />yang dihasilkan dari kondisi proses homogenisasi yang optimal cukup baik<br />dan layak dikonsumsi sampai dengan penyimpanan minggu ke-6.<br />Kata kunci: Santan, homogenisasi, emulsifier/stabiliser, karboksi-metil-<br />selulosa (CMC), mutu</p><p>ABSTRACT<br />Preserved coconut milk is increasingly used publicly because of its<br />practical reasons. One of the ways to stabilize the coconut milk emulsion<br />is by addition of emulsifier/stabilizer and homogenizing process. This<br />study aimed at obtaining conditions of the homogenization process to<br />produce stable emulsions of coconut milk with optimum storage period.<br />The treatments applied were three rotation speeds (6,000, 11,000, and<br />16,000 rpm) and four homogenization durations (10, 20, 30, and 40<br />minutes). The experiment was arranged using factorial completely<br />randomized design (CRD) factorial with three replicates .  Parameters<br />observed were physical characteristics including coconut milk emulsion<br />stability, viscosity, and microscopic test of milk. Furthermore, it was then<br />observed quality of the coconut milk during storage by testing the<br />parameters of pH, color, free fatty acid (FFA) levels, and total microbes by<br />total plate count (TPC). Emulsifiers used in the experiment were Tween 20<br />(concentrations of 0, 0.5, and 1%) and carboxy-methylcellulose - CMC<br />(concentrations of 0 and 0.6%). The results showed that the use of 0.6%<br />CMC was able to produce a good emulsion stability (100%) until the end<br />of the observation (14 days). Optimal condition of homogenization<br />process was obtained at the rotation speed of 6,000 rpm for 30 minutes.<br />The quality of coconut milk resulted from optimal condition of<br />homogenization process was quite good and valid for consumption up to 6<br />weeks of storage.<br />Key words : Coconut  milk,  homogenization,  emulsifier/stabilizer,<br />carboxy-methylcellulose (CMC), quality.</p>

scholarly journals Biochemical, Microbiological and Sensory Quality of Underutilized Marine Gastropod Smoked Products from Chicoreus ramosus and Volegalea cochlidium

2020 ◽  
Vol 11 (1) ◽  
pp. 7605-7613
Keyword(s):  
Fatty Acids ◽  
Room Temperature ◽  
Storage Time ◽  
Sensory Quality ◽  
Plate Count ◽  
Human Consumption ◽  
Total Volatile ◽  
Total Plate Count ◽  
Organoleptic Characteristics

Gastropods are one of the important sea-foods rich in protein, glycogen, minerals, and low-fat content. The proximate composition such as protein, carbohydrate, and lipid content of the smoked meat of C. ramosus and V. cochlidium was 11.84, 4.28, 2.88, and 8.96, 4.74, 3.04 % respectively.The moisture content of both the smoked meat was gradually increased from 2.2 -12.6% during storage at room temperature. The spoilage indicators such as Free Fatty Acids, TMA – N (Trimethylamine – Nitrogen), and TVB – N (Total Volatile Base- Nitrogen) values were found to be increased as storage time increased. The increasing TPC (Total Plate Count) and TFC (Total Fungal Count) and organoleptic characteristics were also increasing in both smoked meat during increased storage. This study indicated that the quality of C. ramosus and V. cochlidium smoked meat were found to be good and safe for human consumption even after 180 days of storage.

scholarly journals Kajian Edible Coating Berbasis Kolang-Kaling dengan Penambahan Bahan Pengental dari Sumber Alami (Pati dan Pektin) dan Sintetis (CMC) yang Diaplikasikan pada Dodol

2020 ◽  
Vol 3 (1) ◽  
pp. 13
Author(s):  
Dwi Pramsiska ◽  
Noor Harini ◽  
Sri Winarsih ◽  
Hanif Alamudin Manshur
Keyword(s):  
Design Method ◽  
Edible Coating ◽  
Plate Count ◽  
Treatment Level ◽  
Edible Coatings ◽  
Total Plate Count ◽  
Randomized Design ◽  
Two Factors ◽  
Level 1

The purpose of this study was to determine the effect of the type of thickener on the quality of edible coatings, the effect of the concentration of thickener types on the quality of edible coatings applied to dodol, and find the best treatment of edible coatings that can increase the shelf life of dodol. The research was arranged in a Nested Randomized Design method consisting of two factors. First factor that became the nest was a variation of thickener (P) with treatment level (Pati, Pectin, and CMC) and second factor that became nested namely variation of thickener concentration (K) with treatment level (1%, 1.5%, and 2% ). The results showed that the addition of pectin 2% as the best treatment has a viscosity of 238.2 cP and the ability to protect dodol on the 6th-day storage can be observed at a water content of 26.98% which is close to SNI which is equal to 20%, TPC (Total Plate Count) 4.9 × 104Cfu / g which is close to the TPC number on SNI of 1 × 104Cfu / g, FFA (Free Fatty Acid) of 1.06% which does not exceed the SNI limit of 10.5%, the texture of 8.18 N / mm, the aroma score of 3.53 is a bit rancid, the appearance score is 5.23 which means neutral and the preferences score is 6.07 which means a little like.

Impact of Storage and Packaging Material on the Nutritional, Product Properties and Microbial Count of Extruded Snacks

2020 ◽  
Vol 16 (4) ◽  
pp. 592-600
Author(s):  
Sajad A. Wani ◽  
Tariq A. Bhat ◽  
Nawaz A. Ganie ◽  
Pradyuman Kumar
Keyword(s):  
Bulk Density ◽  
Storage Period ◽  
Sensory Characteristics ◽  
Plate Count ◽  
Extrusion Cooking ◽  
Lateral Expansion ◽  
Total Plate Count ◽  
Sensory Score ◽  
Extruded Snacks ◽  
Kinetics Of

Background: The extrusion cooking is the most widely used process so the development and consumption of extruded snack products having health and nutritious benefits would help increase the health status of the population. Objective: The aim of this study was to investigate the effect of storage days on physical, microbial activity and sensory characteristics of extruded snacks and kinetics of extruded snacks. Methods: Extruded snacks were produced by extrusion cooking at optimized conditions of temperature, moisture and screw speed of 110°C, 12% (db) and 200 rpm. The products were packed in lowdensity polyethylene (LDPE) and laminated pouches (LP) and were stored at an accelerated temperature condition of 40 ± 2°C. The storage stability in terms of quality parameters such as moisture, hardness, bulk density, color, lateral expansion, sensory characteristics and total plate count was investigated. Results: An increase (p≤0.05) in the value of moisture, bulk density, a*, and total plate count was observed during the storage period, whereas hardness, L*, b*, ΔE and sensory characteristics showed significant (p≤0.05) decreased order with storage period. No significant effect on the lateral expansion of the extruded product was observed. A significant decrease in total carbohydrate, fat and protein content was found during the storage period. The average sensory score and microbial analysis suggested that extruded snacks packed in LDPE pouches can only be acceptable up to the 60th day and extruded snacks packed in LP can be acceptable to more than 90th day. The kinetics of color and hardness suggest first order kinetics. Conclusion: Overall investigation suggested that extruded snacks were more stable in the LP as compared to LDPE pouches.

scholarly journals The effect of sorbitol and white sweet potatoes (Ipomea batatas L.) inulin extract application on marshmallow physical, chemical and organoleptic properties

Food Research ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 298-305
Author(s):  
B. Yudhistira ◽  
A.K. Putri ◽  
S. Prabawa
Keyword(s):  
Sweet Potato ◽  
Design Method ◽  
Sweet Potatoes ◽  
Physical Chemical ◽  
Organoleptic Characteristics ◽  
Randomized Design ◽  
Ipomea Batatas ◽  
The Difference ◽  
The One ◽  
High Calorie

Marshmallow belongs to a high-calorie food that requires a low-calorie substitute for sucrose, one of which is sorbitol. Marshmallow has the potential to become a functional food with the addition of inulin contained within white sweet potatoes. Inulin refers to a type of fructan carbohydrate which contains fiber and has the potential as a prebiotic that is beneficial for the human’s body. This study aims to determine the effect of the addition of white sweet potato (Ipomea batatas L.) inulin extract and sorbitol on the physical, chemical and organoleptic characteristic of marshmallows and to obtain the best marshmallow’s formula through white sweet potato (Ipomea batatas L.) inulin extract and sorbitol addition. The completely randomized design method (CRD) applied in this study consisted of one factor, namely the difference in formulation between the concentration of white sweet potato inulin extract (2% and 3%) and the concentration of sorbitol (25%, 50%, and 75%). The statistical analysis utilized the One Way Analysis of Variance (ANOVA) method using SPSS. The results of this study indicated that the addition of white sweet potato inulin extract and sorbitol had a significant effect on tensile strength, density, moisture content, ash content, total calories, dietary fiber, and organoleptic characteristics of marshmallows. The best formula for marshmallows was formula 4 with the addition of 2% white sweet potato inulin extract and 50% sorbitol.

scholarly journals The influence of ethanol extracts concentration of mengkudu fruit (Morinda citrifolia) and storage time toward beef quality

2011 ◽  
Vol 9 (1) ◽  
pp. 26-32
Author(s):  
AVE SONIA RAHMAN ◽  
TJAHJADI PURWOKO ◽  
ESTU RETNANINGTYAS NUGRAHENI
Keyword(s):  
Storage Time ◽  
Ph Value ◽  
Morinda Citrifolia ◽  
Plate Count ◽  
Dilution Method ◽  
Beef Quality ◽  
Fresh Meat ◽  
Randomized Design ◽  
Ethanol Extracts ◽  
And Storage

Rahman AS, Purwoko T, Nugraheni ER. 2011. The influence of ethanol extracts concentration of mengkudu fruit (Morinda citrifolia) and storage time toward beef quality. Biofarmasi 9: 26-32. The high protein content of beef makes it easy to get a contamination caused by an activity of bacteria. The use of formalin as a preservative substance especially for beef can make a damage to health, so it is required to find preservative substances as alternative to substitute formalin. Mengkudu (Morinda citrifolia L.) has antibacteria compounds to the decompose bacteria of beef, so mengkudu fruit can be one of natural preservative substance alternatives, especially for beef. The purposes of this research were to determine the influence of ethanol extracts concentration of mengkudu fruit and a storage-time effect toward bacteria amount, and to determine the concentration that had a same activity with formalin to combate the replication of bacteria. This research used two-way completely randomized design. The samples were fresh meat beef that be submerged in mengkudu extract with concentrations of 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100% and formalin 1% as a comparator. After that, the beef was storaged in a room temperature during 16 hours, and every 4 hours it was tested for water content, pH value, beef temperature and a total plate count (TPC) test with a dilution method, and then the number of bacteria colonies with the limit of the bacteria amount of the beef to consume might not be more than 1x104 CFU/gram. The data were analyzed by ANOVA. If there was a significance, it would be continued by a DMRT test with an error rate 5%. The research results showed that all extracts concentration of mengkudu fruit and storage-time gave a significant effect (p<0.05) toward bacteria amount. The concentration of 100% had the same activity with formalin to combate the replication of bacteria among 16 hours storage time.

scholarly journals Efek Agitasi Susu Probiotik yang ditambahkan Buah Naga Merah (Hylocereus polyrhizus) terhadap Uji Sensorik dan Total Plate Count

2016 ◽  
Vol 1 (1) ◽  
pp. 816-823
Author(s):  
Feby Zalika Parindra ◽  
Yusdar Zakaria ◽  
Yurliasni Yurliasni
Keyword(s):  
Ph Value ◽  
Plate Count ◽  
Milk Processing ◽  
Total Plate Count ◽  
Randomized Design ◽  
Dragon Fruit ◽  
Microbial P ◽  
Two Factors ◽  
Completely Randomized Design ◽  
Hylocereus Polyrhizus

Abstrak.  Suatu penelitian telah dilakukan untuk mengetahui efek agitasi susu probiotik yang ditambahkan buah naga merah (Hylocereus Polyrhizus). Penelitian ini dilakukan di Laboratorium Ilmu dan Teknologi Pengolahan Susu Fakultas Pertanian Universitas Syiah Kuala pada tanggal 29 April - 31 Mei 2016. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) pola faktorial 2x4 dengan 3 kali ulangan yang terdiri dari 2 faktor, A, agitasi yaitu (A1) dan (A2) non agitasi. Dan faktor B yaitu konsentrasi buah naga merah (B1) 20%,  (B2) 25%,  B3 (30%) dan (B4) 35%. Parameter yang diamati adalah derajat keasaman (pH), total mikroba dan uji organoleptik. Hasil penelitian menunujukkan bahwa terdapat pengaruh yang sangat nyata (P0,01) terhadap derajat keasaman (pH) dan berpengaruh nyata terhadap total mikroba (P0,05) serta terdapat interaksi antara kedua perlakuan. Sedangkan untuk uji organoleptik terdapat pengaruh yang sangat nyata (P0,01) terhadap kekentalan dan warna susu probiotik.  nilai derajat keasaman pH 4,03 - 4,11 dengan agitasi (pengadukan) masih sesuai dengan standar (SNI) 01-2981-1992. Sedangkan nilai total mikroba optimal terjadi pada penambahan buah naga sebanyak 30% baik agitasi maupun non agitasi. Effects of Milk Probiotic Agitation Added Red Dragon Fruit (Hylocereus Polyrhizus) on Sensory Test and Total Plate Coun Abstract.  A study about effects of milk probiotic agitation added red dragon fruit (Hylocereus Polyrhizus)  has been conducted to determine to test sensory and total plate count. This research was held at the Laboratory of Science and Milk Processing Technology, Agriculture Fakulty Syiah Kuala University on April 29 to May 31, 2016. This study used a completely randomized design (CRD) 2x4 factorial design with three replications consisting of two factors, A, agitation (A1) and (A2) non agitation. And factor B is the concentration of red dragon fruit (B1) 20%, (B2) 25%, B3 (30%) and (B4) 35%. The observed parameter is the degree of acidity (pH), total microbial and organoleptic tests. The results of the study indicate that the there is a  highly significant influence (P 0,01) to the degree of acidity (pH) and total significantly affected the total microbial (P 0.05), and there is interaction between the two treatments. As for organoleptic tests are highly significant effect (P 0.01) the thickness and color of probiotic milk. acidity pH value of 4.03 to 4.11 with agitation (stirring) is still in accordance with the standard (SNI) 01-2981-1992. While the total value of optimal microbial occurred upon addition of dragon fruit by 30% both agitation and non agitation

scholarly journals Pemanfaatan Pupuk Organik Kulit Pisang Dan Azolla Terhadap Pertumbuhan Kangkung Darat Dengan Sistem Akuaponik

2019 ◽  
Vol 12 (01) ◽  
pp. 1-10
Author(s):  
Maria Sastriana ◽  
Ngadiani Ngadiani
Keyword(s):  
Chlorophyll Content ◽  
Chlorophyll A ◽  
Organic Fertilizer ◽  
Control Treatment ◽  
Banana Peel ◽  
Chlorophyll B ◽  
Total Chlorophyll ◽  
Azolla Pinnata ◽  
Randomized Design ◽  
Weight Test

The aim of this study was to compare the organic fertilizer of azolla pinnata and banana peel and a combination of azolla pinnata and banana peel with the same concentration of 800 ppm to the weight of harvest and the chlorophyll content of ground spinach (Ipomoea reptans Poir.). The experiment was carried out experimentally using a completely randomized design with control treatment, 800 ppm azolla pinnata, 800 ppm banana skin and a combination of azolla pinnata and banana peels 800 ppm which were repeated 6 times each. The application was carried out by pouring 800 ppm of azolla pinnata, 800 ppm of banana peel and a combination of azolla pinnata and 800 ppm banana peel on each gutter. The results showed that azolla pinnata and banana peel nutrition had a significant effect (P <0.05) on harvest weight and chlorophyll content of ground spinach plants (Ipomoea reptans Poir.). Nutrition azolla pinnata and banana peel with a concentration of 800 ppm can increase the weight of the land spinach (Ipomoea reptans Poir.) Which has the highest average. In testing the chlorophyll content, the results of chlorophyll a content, chlorophyll b content and the highest total chlorophyll content was found in azolla pinnata 800 ppm nutrition. The results of this study concluded that 800 ppm azolla pinnata, 800 ppm banana peel and 800 ppm combination of azolla pinnata and banana peel in the growth of ground spinach plants (Ipomoea reptans Poir.) Were effective to increase harvest weight and increase chlorophyll content of land spinach (Ipomoea reptans Poir.) Namely chlorophyll a, chlorophyll b and total chlorophyll of land spinach plants (Ipomoea reptans Poir.).   Keywords: ground kale, azolla pinnata, banana peel, harvest weight, test of chlorophyll content, chlorophyll a, chlorophyll b, total chlorophyll.

scholarly journals Effect of freezing period and defrosting methods on chemical composition and microbial count in beef cuts

2014 ◽  
Vol 43 (3) ◽  
pp. 202-206
Author(s):  
RC Biswas ◽  
S Akhter ◽  
MM Hossain ◽  
MS Rana ◽  
M Habibullah
Keyword(s):  
Dry Matter ◽  
Storage Time ◽  
Storage Period ◽  
Matter Content ◽  
Microwave Oven ◽  
Plate Count ◽  
Microbial Count ◽  
Dry Matter Content ◽  
Ether Extract ◽  
Standard Plate Count

The experiment was conducted to examine the effect of freezing and defrosting methods on the quality of beef. Two types of beef samples named as fresh and cured beef samples were taken. Both types were divided into three sub divisions namely air, water and microwave oven. These samples were stored at -20°C temperature in the freezer for 90 days and analyzed on 10th, 45th and 90th day. The dry matter, crude protein, ether extract and ash percentages and standard plate count (SPC) were differed significantly (p<0.01) among the air, water and microwave defrosted samples. Up to 90th days of freezing at -200C dry matter content increased with the increase of storage time almost in all samples except microwave fresh samples. The protein content decreased with the increase of storage time from 10 to 45 days but increased from 45 to 90 days. The ash content decreased with the increase of storage time in case of fresh frozen samples but increased with the increase of storage time in case of cured frozen samples except microwave oven cured sample. Ether extract value gradually increased with the increasing of storage period in case of air fresh, water fresh, air cured and water cured frozen samples but decreased with the increasing of storage period in case of microwave oven fresh and microwave oven cured samples. The SPC value increased with the increase of storage time in case of all samples and differed significantly (p<0.01) among the parameters. The cured microwave defrosted beef was proved as the best technique of defrosting frozen beef.DOI: http://dx.doi.org/10.3329/bjas.v43i3.21649 Bang. J. Anim. Sci. 2014. 43 (3): 202-206

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