AMA, Agricultural Mechanization in Asia, Africa and Latin America
AMA, Agricultural Mechanization in Asia, Africa and Latin America (AMA) (issn: 00845841) is a peer reviewed journal first published online after indexing scopus in 1982. AMA is published by Farm Machinery Industrial Research Corp and Shin-Norinsha Co. AMA publishes every subjects of general engineering and agricultural engineering.
WOS Indexed (2026)
30 Jun 2026 (Vol - 57 , Issue- 07 )
31 Jul 2026 (Vol - 57 , Issue 07 )
Aim and Scope :
AMA, Agricultural Mechanization in Asia, Africa and Latin America
AMA, Agricultural Mechanization in Asia, Africa and Latin America (ISSN: 00845841) is a peer-reviewed journal. The journal covers Agricultural and Biological Sciences and all sort of engineering topic. the journal's scopes are in the following fields but not limited to:
Agricultural and Biological Sciences
Electrical Engineering and Telecommunication
Electronic Engineering
Computer Science & Engineering
Civil and architectural engineering
Mechanical and Materials Engineering
Transportation Engineering
Industrial Engineering
Industrial and Commercial Design
Information Engineering
Chemical Engineering
Food Engineering
PHYSICO-CHEMICAL PROPERTIES OF AEROBIC AND VACUUM PACKED FROZEN BROILER MEAT UNDER DIVERSE FROZEN STORAGE CONDITIONS
A detailed study was conducted to assess the practical storage life of frozen broiler meat under two different packaging methods (aerobic and vacuum) and commercial storage conditions (-12ºC,-18ºC and -24ºC) for a period of 12 months. The physico - chemical changes in frozen broiler breast meat quality parameters such as moisture, water-holding capacity, tyrosine value, muscle fibre diameter, have uniformly maintained with a meagre level of reduction (P<0.01) during frozen storage for the period of 12 months, when compared to the fresh meat. Also, there was no significant (P>0.05) influence observed in the above parameters due to aerobic and vacuum method till 12 months of frozen storage. Extract release volume, thiobarbituric acid, total volatile nitrogen, peroxide value, free fatty acid values showed significant influence (P<0.01) with regard to packaging methods, storage period (12 months) and finally storage temperature (-12ºC, -18ºC and -24ºC). Shear force value of the frozen meat samples noticed no considerable change in storage temperature but found significant (P<0.01) impact due to packaging methods and storage period.
A novel parametric design method and adaptive milking mode for personalized dairy farm
With high efficiency, rotary milking robot has been widely used in dairy farms. However, the current design of milking robot cannot meet the demands of personalized farms, because the scale and milking efficiency of various farms have great differences. A novel parametric structural design method for rotary milking robots is firstly proposed to address this issue. Specifically, by studying the parametric mapping relationship between the requirements of personalized dairy farms and the structural characteristics of milking robots, a new design method of adaptive parametric turntable milking robot is proposed. This method can be flexibly adapted to the design of milking robots in different scale dairy farms. Secondly, the cooperative relationship between the milking manipulator and the turntable is studied, and an adaptive milking mode is proposed. The operation and matching principle of the mode are described in detail. Finally, the digital simulation experiment platform is built. The experimental value of the rotary milking robot is within 2% of the theoretical size error, and the optimal manipulator milking mode is verified for different turntable scales.
Influence of Anthropogenic Activity and Beach Morphology on Microplastic Abundance, Distribution, and Characteristics in Beach Sands along the Tamil Nadu Coast, India
This study evaluated microplastic pollution in beach sand from three urban beaches in Tamil Nadu, India, namely Marina, Edward Elliot’s and Kovalam beach by comparing abundance, polymer types, shapes, sizes and surface weathering across four beach zones (low tide, intertidal, high tide and backshore) and three anthropogenic intensity levels (low, moderate, high). Overall MP concentrations increase from 50 ± 33 MP kg⁻¹ in the low‑tide zone to 463 ± 213 MP kg⁻¹ in the backshore. Beaches with high anthropogenic zone (361 ± 262 MP kg⁻¹) contained more MPs than moderate (250 ± 169 MP kg⁻¹) or low anthropogenic zone (187 ± 157 MP kg⁻¹). Among the site, Marina Beach (415 ± 254 MP kg⁻¹) was the most polluted, followed by Edward Elliot’s (214 ± 155 MP kg⁻¹) and Kovalam (170 ± 121 MP kg⁻¹). Polyethylene (47%), polypropylene (24%), polyamide (19%) and polystyrene (8%) dominated the polymer profile. Fibers were the most abundant shape, and 0.1–1 mm MP particles accounted for 41% of the total MPs. SEM imaging revealed surface abrasion, cracking, pitting and pore formation, indicating advanced weathering. These patterns point to recreational, tourism and fishing activities as primary MP sources. To safeguard coastal ecosystems, implementation of robust, long‑term waste‑management practices is urgently required.
Histological Assessment of Frozen Storage Effects on Broiler Breast Muscle under Different Packaging and Temperature Conditions
Freezing is the most widely used preservation method for poultry meat; however, prolonged frozen storage can induce structural changes in muscle tissue that ultimately affect meat quality. Histological studies provide valuable insights into the extent of ultrastructural damage during storage under different conditions. In the present study, fresh broiler breast muscle and frozen samples stored under aerobic and vacuum packaging at −12 ºC, −18 ºC, and −24 ºC for up to 12 months were examined histologically to assess the structural integrity of muscle fibres during storage. A total of 270 frozen broiler samples were collected from a commercial processing plant and stored under the specified conditions, while freshly slaughtered breast samples served as controls. Histological evaluation of fresh breast muscle revealed intact fibres with no noticeable structural alterations. Up to 90 days of frozen storage, the muscle tissue maintained its integrity with minimal changes. At 180 days, mild separation of muscle fibres was observed, which may be attributed to proteolytic activity and physical stress during storage. At extended storage periods of 270 and 360 days, clear separation and tearing of fibres and bundles were evident in all treatments, irrespective of storage temperature or packaging method. These changes were likely due to the formation of intracellular ice crystals, which exert mechanical stress on the muscle ultra structure. The study concludes that the histological integrity of broiler breast muscle is preserved up to 90 days of frozen storage, with only minor alterations evident by 180 days, whereas prolonged storage beyond this period results in significant structural damage.
In vitro screening of different essential oils against Alternaria solani causing early blight of potato
Potato (Solanum tuberosum L.) is a significant cash and staple crop in Meghalaya, contributing to both local food security and agricultural economies. However, its cultivation faces persistent challenges from fungal diseases, among which early blight, caused primarily by Alternaria solani and occasionally by Alternaria alternata, stands out as a major constraint to production. This disease manifests as necrotic lesions with concentric rings on leaves, stems, and tubers, leading to premature defoliation, reduced photosynthetic capacity, and substantial yield losses. In the present study, an early blight pathogen, Alternaria solani, was isolated from infected potato plants collected from fields in the vicinity of the College of Post Graduate Studies in Agricultural Sciences (CPGS-AS), Umiam, Meghalaya. The isolation and morphological identification of this native putative pathogen were followed by in vitro screening against a range of essential oils to evaluate their antifungal efficacy. Among various essential oils evaluated via the poisoned food technique, clove oil demonstrated complete (100%) inhibition of the pathogen at all concentrations (500, 1000, and 1500 ppm), followed by ginger oil at higher concentrations. This effort aims to identify effective, eco-friendly alternatives to synthetic fungicides for the sustainable management of early blight, tailored to the specific pathogen prevalent in the local agroecological conditions of the region.