scholarly journals The Role of Post Harvest Handling on Rice Quality in Indonesia

2016 ◽  
Vol 30 (1) ◽  
pp. 1 ◽  
Author(s):  
Dewa Ketut Sadra Swastika
Keyword(s):  
Quality Improvement ◽  
Grain Quality ◽  
Rice Grain ◽  
Milled Rice ◽  
Rice Quality ◽  
Post Harvest ◽  
National Welfare ◽  
Rice Milling ◽  
End Use ◽  
Improved Technology

<p><strong>Indonesian</strong><br />Beras berfungsi sebagai makanan pokok dan bahan baku berbagai produk pangan lainnya yang memerlukan kualitas tertentu. Perbaikan kualitas beras tidak memberikan insentif bagi petani dan pedagang di Indonesia, khususnya melalui perontokan, pengeringan, dan penggilingan. Di pihak lain, sebagian besra negara-negara penghasil padi member perhatian lebih pada peningkatan kualitas beras. Kualitas beras meliputi sifat-sifat fisik yang mempengaruhi penampilan maupun sifat-sifat kimia yang menentukan kualitas jika dimasak. Proses produksi, pasca panen, penggilingan dan pemasaran mempengaruhi kualitas beras. Peningkatan kualitas beras akan menguntungkan produsen maupun konsumen beras. Agar pedagang beras bersedia melakukan pasca panen secara baik diperlukan insentif harga yang memadai untuk gabah kering giling dan beras, misalnya harga pembelian oleh pemerintah. Teknologi pasca panen juga harus diperbaiki agar kualitas beras yang dihasilkan menjadi lebih baik.</p><p> </p><p><strong>English</strong><br />Aside from being a staple food, rice also has many uses, especially for food industry. Various rice uses require quality evaluation according to the requirement for a specific end use. Whether rice is acceptable for an intended use is determined by quality testing based on a fixed set of criteria. In Indonesia, the main problem of rice quality improvement is the absence of incentive for farmers and traders to improve rice quality, especially through proper threshing, drying, and milling. On the other hands, most rice producing countries are currently paying more attention to the development of post harvest handling and processing to ensure higher rice grain quality. Rice quality is multidimensional. It includes both physical characteristics that influence appearance, and chemical characteristics that determine cooking quality. Thus, rice grain quality is determined by: production process, post harvest handling, milling and marketing techniques. Among rice post harvest handling, proper threshing, drying, milling, and storage are the key points to produce good quality rice. Rice quality improvement is expected to increase national welfare by raising the value of rice to either consumers or producers. In order to encourage rice businessmen to do the proper post harvest handling, there should be attractive price incentives policy for selling dried paddy (GKG) and milled rice (beras). Price incentive could be in the form of government purchasing price (HPP). In other words, there should be an attractive incentive to do a proper threshing, drying and rice milling by using improved technology in order to produce high quality rice.</p>

scholarly journals Impact of Elevated CO2 and Reducing the Source-Sink Ratio by Partial Defoliation on Rice Grain Quality – A 3-Year Free-Air CO2 Enrichment Study

2021 ◽  
Vol 12 ◽  
Author(s):  
Bo Gao ◽  
Shaowu Hu ◽  
Liquan Jing ◽  
Yunxia Wang ◽  
Jianguo Zhu ◽  
...  
Keyword(s):  
Nutritional Quality ◽  
Grain Quality ◽  
Eating Quality ◽  
Rice Grain ◽  
Milled Rice ◽  
Rice Quality ◽  
Free Air ◽  
Source Sink ◽  
The Impact ◽  
Rice Processing

Evaluating the impact of increasing CO2 on rice quality is becoming a global concern. However, whether adjusting the source-sink ratio will affect the response of rice grain quality to elevated CO2 concentrations remains unknown. In 2016–2018, we conducted a free-air CO2 enrichment experiment using a popular japonica cultivar grown at ambient and elevated CO2 levels (eCO2, increased by 200 ppm), reducing the source-sink ratio via cutting leaves (LC) at the heading stage, to investigate the effects of eCO2 and LC and their interactions on rice processing, appearance, nutrition, and eating quality. Averaged across 3 years, eCO2 significantly decreased brown rice percentage (−0.5%), milled rice percentage (−2.1%), and head rice percentage (−4.2%) but increased chalky grain percentage (+ 22.3%) and chalkiness degree (+ 26.3%). Markedly, eCO2 increased peak viscosity (+ 2.9%) and minimum viscosity (+ 3.8%) but decreased setback (−96.1%) of powder rice and increased the appearance (+ 4.5%), stickiness (+ 3.5%) and balance degree (+ 4.8%) of cooked rice, while decreasing the hardness (−6.7%), resulting in better palatability (+ 4.0%). Further, eCO2 significantly decreased the concentrations of protein, Ca, S, and Cu by 5.3, 4.7, 2.2, and 9.6%, respectively, but increased K concentration by 3.9%. Responses of nutritional quality in different grain positions (brown and milled rice) to eCO2 showed the same trend. Compared with control treatment, LC significantly increased chalky grain percentage, chalkiness degree, protein concentration, mineral element levels (except for B and Mn), and phytic acid concentration. Our results indicate that eCO2 reduced rice processing suitability, appearance, and nutritional quality but improved the eating quality. Rice quality varied significantly among years; however, few CO2 by year, CO2 by LC, or CO2 by grain position interactions were detected, indicating that the effects of eCO2 on rice quality varied little with the growing seasons, the decrease in the source-sink ratios or the different grain positions.

scholarly journals The Nutritional Components of Rice are Closely Related to Grain Quality Traits in Rice

2020 ◽  
Vol 11 (2) ◽  
pp. 239
Author(s):  
Bo Peng ◽  
Ke-Xin Jin ◽  
Dian-Ya Luo ◽  
Xia-Yu Tian ◽  
Yan-Fang Sun ◽  
...  
Keyword(s):  
Grain Quality ◽  
Decisive Role ◽  
Mineral Elements ◽  
Rice Grain ◽  
Quality Traits ◽  
Rice Quality ◽  
New Varieties ◽  
Physical And Chemical ◽  
The Relationship

Starch, protein and lipid are the most important nutrients in rice, and their composition and content in rice grains play a decisive role in the grain quality. Rice quality (including appearance quality, cooking quality, nutrition quality, grinding and processing quality, etc.) is not only affected by the composition of the nutrients in grain of rice, but also by the physical and chemical characteristics and their content in grains, but also vulnerable to external environmental conditions. To clarify the relationship between the main nutrients in rice and their grain quality traits is of great theoretical significance and potential application value for the continuous improvement of rice quality in the future. Therefore, this paper reviewed the effects of starch, protein, lipid and mineral elements in grain of rice and also on quality of trait in rice. It is also discussed the relationship between these nutrients and rice grain quality traits. All of those will provide important information for the quality of grain improvement and breeding of new varieties with high quality in rice.

scholarly journals Quality of Rice Grain is Influenced by Organic and Inorganic Sources of Nutrients and Antioxidant Application

2016 ◽  
Vol 49 (4) ◽  
pp. 57-68 ◽  
Author(s):  
A.S. Gharieb ◽  
T.F. Metwally ◽  
S.H. Abou-Khadrah ◽  
A.A. Glela ◽  
A. El Sabagh
Keyword(s):  
Grain Quality ◽  
Foliar Application ◽  
Rice Variety ◽  
Rice Grain ◽  
Quality Traits ◽  
Chemical Fertilizers ◽  
Rice Quality ◽  
The Cost ◽  
Organic And Inorganic Fertilizers

Abstract The present research was conducted to study the influence of organic and inorganic sources of nutrients as well as antioxidant on rice quality. The experiment was designed in split-split plots with four replications, where main plots were assigned to nitrogen (0, 55, 110 and 165 kg N ha−1) and sub plots were allocated to compost (0, 3.5 and 7 tons ha−1), while the sub-sub plots were assigned to ascobien (control, spraying with ascobien in two times at 15 and 30 days after transplanting (DAT), spraying with ascobien three times at 15, 30 and 45 DAT). The result indicated that grain quality traits were significantly influenced by the organic and inorganic fertilizers, and ascobien. The percentage of hulling, milling and amylose were positively and significantly influenced by nitrogen, organic and antioxidants application. Most of studied characters produced the highest values with the organic fertilize were combined with nitrogen and antioxidants. Application of 110 kg N ha−1, 7 t ha−1 compost and two or three spraying of ascobien, 110 kg N ha−1 or 3.5 t ha−1 compost and three times spraying and 55 kg N ha−1, 7 t ha−1 compost and two times spraying could be recommended for optimum grain quality of Sakha106 rice variety. It can be concluded that compost along with the foliar application of ascobien can be saved from 50 to110 kg N ha−1, without reducing grain quality. It can be the key to reduce the need for chemical fertilizers and decrease the cost of production with keeping healthy soil.

Evaluating Techniques for Rice Grain Quality Using near Infrared Transmission Spectroscopy

1998 ◽  
Vol 6 (A) ◽  
pp. A111-A116 ◽  
Author(s):  
Naoto Shimizu ◽  
Jyunji Katsura ◽  
Takashi Yanagisawa ◽  
Bunji Tezuka ◽  
Yasuyuki Maruyama ◽  
...  
Keyword(s):  
Grain Quality ◽  
Near Infrared ◽  
Amylose Content ◽  
Rice Grain ◽  
Whole Grain ◽  
Infrared Transmission ◽  
Reliable Determination ◽  
Rice Quality ◽  
Head Rice ◽  
Apparent Amylose Content

The development of advanced evaluation techniques for rice quality has been a desire of the Japanese rice industry (breeding, distribution and processing). The objective of the present study is to develop novel techniques for evaluating rice grain quality. A reliable determination method for amylose in whole grain rice using near infrared transmission (NIT) is proposed, using Partial Least Squares (PLS) regression analysis. It was suggested from results based on two different validation methods that the PLS models have possibilities for determination of apparent amylose content using NIT spectroscopy. PLS modelling for constituents important in rice quality indicates that reasonably accurate models are attainable for moisture content and protein content in whole grain rice. However our PLS models were not sufficiently accurate for physical rice quality (head rice ratio, apparent density, whiteness) using NIT spectroscopy.

scholarly journals Designing U.S. Corn Grades to Reflect End Use Value

2003 ◽  
Vol 35 (1) ◽  
pp. 15-28
Author(s):  
Jeffrey J. Reimer ◽  
Lowell D. Hill
Keyword(s):  
Quality Improvement ◽  
Grain Quality ◽  
Quality Characteristics ◽  
Use Value ◽  
Intrinsic Properties ◽  
Foreign Material ◽  
Extensive Information ◽  
End Use

The 1986 U.S. Grain Quality Improvement Act introduced an explicit, economic purpose for grades—that they transmit information about end use value—but provided little guidance about what factors to include in grades. We determine which quality characteristics best reflect the processed value of U.S. corn in the case of a Japanese wet miller. Foreign material is the only grade factor closely related to processed value, but a large number of nongrade attributes, many of which reflect the intrinsic properties of corn, are found to vary substantially across shipments and to provide extensive information about value. Recommendations for U.S. grades are made.

scholarly journals Applications of the CRISPR/Cas9 System for Rice Grain Quality Improvement: Perspectives and Opportunities

2019 ◽  
Vol 20 (4) ◽  
pp. 888 ◽  
Author(s):  
Sajid Fiaz ◽  
Shakeel Ahmad ◽  
Mehmood Noor ◽  
Xiukang Wang ◽  
Afifa Younas ◽  
...  
Keyword(s):  
Quality Improvement ◽  
Genome Editing ◽  
Reverse Genetics ◽  
Grain Quality ◽  
Rice Genome ◽  
Targeted Mutagenesis ◽  
High Yield ◽  
Genomic Alteration ◽  
Rice Grain ◽  
The Past

Grain quality improvement is a key target for rice breeders, along with yield. It is a multigenic trait that is simultaneously influenced by many factors. Over the past few decades, breeding for semi-dwarf cultivars and hybrids has significantly contributed to the attainment of high yield demands but reduced grain quality, which thus needs the attention of researchers. The availability of rice genome sequences has facilitated gene discovery, targeted mutagenesis, and revealed functional aspects of rice grain quality attributes. Some success has been achieved through the application of molecular markers to understand the genetic mechanisms for better rice grain quality; however, researchers have opted for novel strategies. Genomic alteration employing genome editing technologies (GETs) like clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 (Cas9) for reverse genetics has opened new avenues of research in the life sciences, including for rice grain quality improvement. Currently, CRISPR/Cas9 technology is widely used by researchers for genome editing to achieve the desired biological objectives, because of its simple targeting. Over the past few years many genes that are related to various aspects of rice grain quality have been successfully edited via CRISPR/Cas9 technology. Interestingly, studies on functional genomics at larger scales have become possible because of the availability of GETs. In this review, we discuss the progress made in rice by employing the CRISPR/Cas9 editing system and its eminent applications. We also elaborate possible future avenues of research with this system, and our understanding regarding the biological mechanism of rice grain quality improvement.

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