Effect of grain moisture content and storage time on efficacy of inert and botanical dusts for the control of Sitophilus zeamais in stored maize

2012 ◽  
Vol 3 (10) ◽  
Author(s):  
Shem K. Khakame
Keyword(s):  
Moisture Content ◽  
Storage Time ◽  
Sitophilus Zeamais ◽  
Grain Moisture ◽  
And Storage

scholarly journals Wheat Grinding Process with Low Moisture Content: A New Approach for Wholemeal Flour Production

Processes ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 32
Author(s):  
Waleed H. Hassoon ◽  
Dariusz Dziki ◽  
Antoni Miś ◽  
Beata Biernacka
Keyword(s):  
Particle Size ◽  
Moisture Content ◽  
Average Particle Size ◽  
Average Particle ◽  
Grinding Process ◽  
Mixing Properties ◽  
New Approach ◽  
Grain Moisture ◽  
Flour Production ◽  
And Storage

The objective of this study was to determine the grinding characteristics of wheat with a low moisture content. Two kinds of wheat—soft spelt wheat and hard Khorasan wheat—were dried at 45 °C to reduce the moisture content from 12% to 5% (wet basis). Air drying at 45 °C and storage in a climatic chamber (45 °C, 10% relative humidity) were the methods used for grain dehydration. The grinding process was carried out using a knife mill. After grinding, the particle size distribution, average particle size and grinding energy indices were determined. In addition, the dough mixing properties of wholemeal flour dough were studied using a farinograph. It was observed that decreasing the moisture content in wheat grains from 12% to 5% made the grinding process more effective. As a result, the average particle size of the ground material was decreased. This effect was found in both soft and hard wheat. Importantly, lowering the grain moisture led to about a twofold decrease in the required grinding energy. Moreover, the flour obtained from the dried grains showed higher water absorption and higher dough stability during mixing. However, the method of grain dehydration had little or no effect on the results of the grinding process or dough properties.

scholarly journals Physiological quality of pink pepper seeds (Schinus terebinthifolia Raddi.) as a function of storage

2021 ◽  
Vol 38 (1) ◽  
pp. 144-157
Author(s):  
Thaísa De Oliveira Silveira ◽  
Madelon Rodrigues Braz ◽  
Gilmara Pires de Moura Palermo ◽  
Tiago Böer Breier
Keyword(s):  
Moisture Content ◽  
Storage Time ◽  
Storage Period ◽  
Seed Storage ◽  
Dry Weight ◽  
Native Forest ◽  
Alternative Source ◽  
Physiological Quality ◽  
And Storage

Seeds of native forest species for food and seedling production have a growing demand that impacts the need for studies involving seed storage in order to maintain good levels of germination quality. Thus, scientific analyzes that explore the physiological potential of the seeds of these species are necessary, especially for the pink pepper (Schinus terebinthifolia Raddi.), a species used as an alternative source of income for traditional communities and which has been arousing interest due to the consumption of its fruits as a condiment in the national and international market. This work aimed to assess the physiological quality of pink pepper seeds according to the storage period and seed size. The seeds came from a rural settlement, a pioneer in the extraction of pink pepper, in the state of Rio de Janeiro, Brazil. The seeds were evaluated for moisture content, germination, first count, length and dry weight of the germinated seedlings, during the period of time that they remained stored and the size of the seeds. The results allowed to conclude that: i) the germinative percentage of the stored pink pepper seeds decreased over the months; ii) the moisture content of the seeds decreased over the months evaluated iii) the different sizes of seeds did not show differences in germination and storage time and iv) values of length and dry weight of the seedlings did not differ according to the period of storage.

INTERACTIONS BETWEEN MAIZE WEEVIL (COLEOPTERA: CURCULIONIDAE) INFESTATIONS AND INFECTION BY ASPERGILLUS FLAVUS AND OTHER FUNGI IN STORED CORN

1987 ◽  
Vol 22 (2) ◽  
pp. 108-118 ◽  
Author(s):  
D. E. Dix ◽  
J. N. All
Keyword(s):  
Moisture Content ◽  
Aspergillus Flavus ◽  
Fungal Growth ◽  
Sitophilus Zeamais ◽  
High Moisture ◽  
Maize Weevil ◽  
Grain Moisture ◽  
Unidentified Species ◽  
Wet Weight ◽  
Bright Blue

Thirty adult maize weevils, Sitophilus zeamais Motschulsky, were placed in six glass-fronted wooden grain storage bins filled with 7.2 kg of shelled corn at 14% moisture content. An auger plug containing a heavily sporulating culture of Aspergillus flavus Link was added to the center of three infested bins and three noninfested bins. Another three bins of corn were untreated controls. All of the bins were stored for 16 weeks at 24°C. Weevil-infested corn began significantly heating (2°C) within nine weeks and began losing weight within 12 weeks. The distribution of fungal growth, high moisture grain, corn dust caking, and maize weevils coincided, being initially restricted to the lower edges of the containers and gradually migrating upward. An unidentified species of Penicillium (bright blue) was observed sporulating within 11 weeks in weevil-infested bins. The bins containing S. zeamais lost an average of 2% of their initial wet weight, and increased in grain moisture and temperature by 20% and 5°C, respectively. Pencillium (bright blue) comprised > 95% of the inoculum present on kernels, however A. flavus comprised > 90% of the inoculum recovered from surface sterilized maize weevils. Increased mortality of teneral adults occurred in A. flavus-inoculated bins. Corn from weevil-free bins, whether inoculated with A. flavus or not, failed to support fungal growth, heat, or lose weight.

scholarly journals Short Communication: Application of bacteriocin from Lactobacillus plantarum SRCM 1 004 34 strain isolated from okara as a natural preservative in beef sausage

2020 ◽  
Vol 21 (5) ◽  
Author(s):  
SALAM ARITONANG ◽  
ELLY ROZA ◽  
AFRIANI SANDRA
Keyword(s):  
Moisture Content ◽  
Lactobacillus Plantarum ◽  
Storage Time ◽  
Short Communication ◽  
Bacterial Count ◽  
Natural Preservative ◽  
Beneficial Effects ◽  
Randomized Design ◽  
Natural Preservatives ◽  
And Storage

Abstract. Aritonang SN, Roza E, Sandra A. 2020. Short Communication: Application of bacteriocin from Lactobacillus plantarum SRCM 1 004 34 strain isolated from okara as a natural preservative in beef sausage. Biodiversitas 21: 2240-2243. Lactic Acid Bacteria (LAB) can be found in food and most of the LAB have beneficial effects for humans as potential probiotics. LAB isolated from okara (soy milk pulp) produces antimicrobial compounds called bacteriocins which can be used as natural preservatives in sausages. This study aims to determine the effectiveness of this bacteriocin from LAB as a natural preservative in sausages. The bacteriocin was isolated from Lactobacillus plantarum SRCM 1 004 34 strain isolated from Okara. Completely Randomized Design (CRD) was used in 4 X 4 factorial pattern by three replicates The first factor was the percentage addition of bacteriocin (B): 0% (B0), 0.3% (B1), 0.6% (B2) and 0.9% v/b (B3). The second factor was the length of sausage storage time at 4°C (L): 0 days (L0), 4 days (L1), 8 days (L2) and 12 days (L3). The observed variables were moisture content, protein, fat, pH, total aerobic bacteria, and sausage fatty acid profile. The results showed that the content of protein, fat, and the bacterial count was significantly influenced by the interaction of the percentage addition of bacteriocin and storage time. pH was significantly affected by bacteriocin dose and storage time but was not affected by the interaction of other factors. The moisture content of the sausage was significantly affected by storage time. The results of this study showed that sausages treated with 0.9% bacteriocin (B3) with a maximum storage time of 12 in the refrigerator was still safe to be consumed.

scholarly journals Penggunaan Edible Coating Dalam Pengawaten Buah Kelengkeng Dimocarpus longan Lour

2021 ◽  
Vol 21 (2) ◽  
pp. 374-382
Author(s):  
Suriana Laga ◽  
Saiman Sutanto ◽  
Fatmawati Fatmawati ◽  
Abd. Halik ◽  
Aylee Christine Alamsyah Sheyoputri
Keyword(s):  
Weight Loss ◽  
Experimental Design ◽  
Moisture Content ◽  
Water Content ◽  
Storage Time ◽  
Edible Coating ◽  
Coating Application ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
And Storage

Masalah yang sering muncul  pada buah-buahan adalah adalah cepatnya mengalami kerusakan karena proses respirasi dan transpirasi sehingga akan memperpendek umur simpan. Salah satu upaya memperpanjang kesegaran buah Kelengkeng dengan pemakaian Edible Coating.  Penelitian ini bertujuan untuk mengetahui kemampuan Edible Coating sebagai pengemas buah Kelengkeng selama penyimpanan. Perlakuan penelitian terdiri atas aplikasi Edible Coating (Kontrol) dan lama penyimpanan (1 hari, 2 hari, 3 hari, 4 hari, 5 hari dan 6 hari). Parameter yang diamati adalah susut berat, kadar air dan warna. Rancangan percobaan yang digunakan adalah rancangan acak lengkap pola faktorial dengan dua kali ulangan. Pengaruh perlakuan aplikasi Edible Coating dan lama penyimpanan berpengaruh sangat nyata terhadap susut berat, kadar air dan warna buah Kelengkeng. Penggunaan Edible Coating sebagai pelapis mampu mengurangi susut berat buah Kelengkeng, mempertahankan kadar air dan warna buah Kelengkeng selama penyimpanan. The problem that often arises in fruits is that they are quickly damaged due to the respiration and transpiration processes so that they will shorten their shelf life. One of the efforts to extend the freshness of Longan fruit is by using Edible Coating. This study aims to determine the ability of Edible Coating as a packaging for longan fruit during storage. The research treatment consisted of Edible Coating application (Control) and storage time (1 day, 2 days, 3 days, 4 days, 5 days and 6 days). Parameters observed were weight loss, moisture content and color. The experimental design used was a completely randomized design with a factorial pattern with two replications. The effect of Edible Coating application treatment and storage time had a very significant effect on weight loss, moisture content and color of Longan fruit. The use of Edible Coating as a coating is able to reduce the weight loss of longan fruit, maintain water content and color of longan fruit during storage

scholarly journals Penentuan Umur Simpan Menggunakan Metode Accelerated Shelf Life Test (ASLT) pada Bubuk Minuman Instan Stroberi Foam-Mat Drying

2020 ◽  
Vol 9 (4) ◽  
pp. 151-157
Author(s):  
Sandi Darniadi ◽  
Ridwan Rachmat ◽  
Prima Luna ◽  
Winda Purwani ◽  
Diny Agustini Sandrasari
Keyword(s):  
Vitamin C ◽  
Moisture Content ◽  
Shelf Life ◽  
Storage Time ◽  
Tween 80 ◽  
Life Testing ◽  
Drying Method ◽  
Life Test ◽  
Foaming Agent ◽  
And Storage

Pengolahan buah stroberi dengan teknik pengeringan lazimnya dilakukan untuk tujuan memperpanjang umur simpan. Pada penelitian ini, bubuk minuman instan stroberi dibuat melalui proses foam-mat drying pada suhu 50 oC melalui penambahan putih telur 10% (b/b) sebagai agen pembuih, maltodekstrin 12 % (b/b) dan Tween 80 0,1% (b/b) sebagai stabilizer buih pada sari buah stroberi. Penelitian ini bertujuan untuk menentukan umur simpan bubuk minuman stroberi instan dengan menggunakan metode ASLT (Accelerated Shelf Life Testing) berdasarkan model persamaan Arrhenius. Bubuk minuman instan stroberi disimpan pada suhu penyimpanan 35, 45, dan 55 oC dengan waktu penyimpanan 15 hari. Kadar air, vitamin C dan skor mutu hedonik warna diamati tiap 3 hari. Hasil percobaan menunjukkan hubungan yang linier antara kenaikan kadar air, penurunan kadar vitamin C, dan penurunan skor mutu hedonik warna terhadap waktu penyimpanan pada masing-masing suhu penyimpanan. Umur simpan produk bubuk minuman instan stroberi yang disimpan pada suhu penyimpanan 35, 45, dan 55 oC, menunjukkan hasil berdasarkan kadar air (11, 10, dan 9 hari), vitamin C (779, 773, dan 766 hari) dan mutu hedonik warna (35, 30, dan 26 hari) secara berurutan. Kesimpulannya, umur simpan dapat ditentukan pada minuman instan stroberi dengan menghasilkan nilai yang spesifik tergantung pada parameter yang diteliti.Shelf-life Determination using Accelerated Shelf Life Test (ASLT) Method for Foam-Mat Drying Instant Drink Strawberry PowderAbstractProcessing of strawberry through drying method is designed to prolong its shelf life. This research used strawberry instant drink powder that was obtained using foam-mat drying method at 50 oC with the addition of foaming agent, i.e. 10 % (w/w/) of white egg, 12 % (w/w) of maltodextrin and 0.1 % (w/w) of Tween 80 as foam stabilizers, incorporated with strawberry juice. This study was aimed at determining the shelf life of strawberry instant drink powder using ASLT (Accelerated Shelf Life Testing) based on Arrhenius Model. The strawberry powder sample was stored at 35, 45, and 55 oC for 15 days. Moisture content, vitamin C, and color hedonic score were measured per 3 days. The results showed that there was a linear relationship between the measurement parameters and storage time at those temperatures. The shelf life of strawberry powder at 35, 45, and 55 oC were found as follows: according to moisture content (11.6, 10.7, and 9.9 days), vitamin C (779, 773, and 766 days), and color hedonic score (35, 30, and 26 days), respectively. As conclusion, strawberry instant drink powder was identified its shelf life and showed specific value as observed parameters.

scholarly journals Quality of second season soybean submitted to drying and storage

2016 ◽  
Vol 46 (3) ◽  
pp. 267-275 ◽  
Author(s):  
Cesar Pedro Hartmann Filho ◽  
André Luís Duarte Goneli ◽  
Tathiana Elisa Masetto ◽  
Elton Aparecido Siqueira Martins ◽  
Guilherme Cardoso Oba ◽  
...  
Keyword(s):  
Moisture Content ◽  
Crude Oil ◽  
Crude Protein ◽  
Storage Time ◽  
Oil Quality ◽  
Air Drying ◽  
Drying Temperature ◽  
Dry Matter Loss ◽  
And Storage

ABSTRACT Drying agricultural products reduces the moisture content to suitable levels for storage, in order to maintain the product quality. However, special care with the temperatures applied in the process is important for the integrity and longevity of the material. The present study aimed at determining the immediate and latent effect of air-drying temperatures on the quality of soybean produced as a second season crop. The grains were collected at the R8 stage, close to the physiological maturity, with moisture content of approximately 23 % (w.b.), submitted to drying temperatures of 40 ºC, 50 ºC, 60 ºC, 70 ºC and 80 ºC, up to a moisture content of 12.5 ± 0.7 % (w.b.), and then stored under non-controlled humidity and temperature for 180 days. Thereafter, quality was assessed every 45 days by determining the dry matter loss, color and crude protein and lipid contents, as well as the acidity and peroxide indices of the crude oil extracted. Based on the results obtained, it was concluded that the increase in the air-drying temperature affects the soybean quality and crude oil extracted, being this effect enhanced with the storage time; the soybean and crude oil quality decline with an increase in the air-drying temperature and storage time; the air temperature of 40 ºC has the least effect on the quality of soybean grains and crude oil extracted.

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