• Title/Summary/Keyword: Agri-food

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Analyses of the Awareness of Students' Parents on School Meals and their Intention to increase Consumption of Environment-friendly Agri-products (친환경농산물 학교급식에 대한 학부모의 반응 및 친환경농산물 소비확대 의향 분석)

  • Kim, Ho;Jeon, Doo-Cheol
    • Korean Journal of Organic Agriculture
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    • v.21 no.1
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    • pp.19-31
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    • 2013
  • As a result of analysis on situations of environment-friendly school meals, it was obtained that student's parents were interested in food safety and the importance of sanitary supervision. Many parents responded that environment-friendly school meals increased the health and eating habits of their children. The higher and higher educated parents responded that environment-friendly school meals effected on the children's health positively. Also, the higher educated parents responded that environment-friendly school meals effected on the children's eating habits positively. After the environment-friendly school meals, the item increase to purchase was vegetables by 25% of the consumers who purchase environment-friendly agri-products. The second and third increasing items were respectively fruits and rice. When environment-friendly agri-products were consumpted and influenced positively through school meals, the consumption of environment-friendly agricultural products will be increased. The expansion of environment-friendly school lunch program cannot bring the consumption expansion of environment-friendly agri-products immediately. However, when the persistent promotion and student's parents confidence on environment-friendly agri-products were accumulated and experienced positive effects through school meals, it will give a positive effect on the consumption of environment-friendly agr-products.

A REVIEW OF THE MICROBIAL DIGESTION OF FEED PARTICLES IN THE RUMEN

  • McAllister, T.A.;Bae, H.D.;Yanke, L.J.;Cheng, K.J.;Ha, J.K.
    • Asian-Australasian Journal of Animal Sciences
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    • v.7 no.3
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    • pp.303-316
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    • 1994
  • Microbial digestion of feed in the rumen involves a sequential attack culminating in the formation of fermentation products and microbial cells that can be utilized by the host animal. Most feeds are protected by a cuticular layer which is in effect a microbial barrier that must be penetrated or circumvented for digestion to proceed. Microorganisms gain access to digestible inner plant tissues through damage to the cuticle, or via natural cell openings (e.g., stomata) and commence digestion from within the feed particles. Primary colonizing bacteria adhere to specific substrates, divide to form sister cells and the resultant microcolonies release soluble substrates which attract additional microorganisms to the digestion site. These newly attracted microorganisms associate with primary colonizers to form complex multi-species consortia. Within the consortia, microorganisms combine their metabolic activities to produce the diversity of enzymes required to digest complex substrates (e.g., cellulose, starch, protein) which comprise plant tissues. Feed characteristics that inhibit the microbial processes of penetration, colonization and consortia formation can have a profound effect on the rate and extent of feed digestion in the rumen. Strategies such as feed processing or plant breeding which are aimed at manipulating feed digestion must be based on an understanding of these basic microbial processes and their concerted roles in feed digestion in the rumen.

A Study on the effects of local food brand image congruence for the intention of purchase (로컬푸드와 브랜드의 이미지일치성이 소비자의 구매의도에 미치는 영향에 관한 연구)

  • Lee, EunYoung
    • The Journal of the Convergence on Culture Technology
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    • v.6 no.1
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    • pp.389-393
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    • 2020
  • There is a growing interest and importance in local-based products, especially agri-food globally, but systematic research on this issues is still insufficient. Recently, consumer interest in agri-foods is local based product and local brand. The research began on the relationship between local food and local food brands. This study examined the effect of local food products and brand image congruence on brand preference and purchase intention of local food. The results showed that the stronger the image congruence between local food products and brands, the more positively the brand preference. In addition, the stronger the brand preference, the higher the customer's intention to repurchase.

Sensitivity of Escherichia coli to Seaweed (Ascophyllum nodosum) Phlorotannins and Terrestrial Tannins

  • Wang, Yuxi;Xu, Z.;Bach, S.J.;McAllister, T.A.
    • Asian-Australasian Journal of Animal Sciences
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    • v.22 no.2
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    • pp.238-245
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    • 2009
  • Pure culture experiments were conducted to assess the bacteriostatic and bactericidal effects of phlorotannins (PT) isolated from Ascophyllum nodosum (brown seaweed) on Escherichia coli O157:H7. In Exp. 1, one non-O157:H7 strain (25922) and three strains of E. coli O157:H7 (3081, EDL933 and E318N) were cultured in M9 medium with PT included at 0 (control), 25, 50 or $100{\mu}g/ml$ (n = 3). Bacterial growth was monitored by $OD_{600}$ at 0, 4, 6, 12 and 24 h, and by dilution plating at 0, 4, 6 and 24 h. All strains were inhibited (p<0.001) by PT to varying degrees. At 50 or $100{\mu}g/ml$, PT prevented growth of all four strains. At $25{\mu}g\;PT/ml$, growth of 25922, 3081, E318N and EDL933 was inhibited for 6, 12 and 24 h, respectively, but 25922 and 3081 resumed growth by 12 and 24 h. Direct plating confirmed bactericidal effects of PT on all four strains at $100{\mu}g/ml$, and on EDL933 and E318N at $50{\mu}g/ml$. In Exp. 2, strains 25922 and 3081 were incubated with no tannins or with $50{\mu}g/ml$ of PT, purified condensed tannins (CT) from Quebracho (Schinopsis balansaei), or purified tannic acid from Rhus semialata (Anacardiaceae) as hydrolysable tannins (HT). Strain 3081 was unaffected by HT or CT, but was completely inhibited (p<0.001) by PT at 4, 6 and 24 h. Strain 25922 was unaffected by HT, slightly inhibited by CT, and almost eradicated by PT at 4 and 6 h. Transmission electron microscopy revealed tannin-mediated alterations to bacterial cell walls. Phlorotannins from A. nodosum exhibit growth-inhibiting and bactericidal effects in vitro against the strains of E. coli O157:H7 investigated. Anti-E. coli efficacy of A. nodosum PT is superior to that of terrestrial tannins purified from Quebracho and from Rhus semialata.

Effect of SNS Characteristics on Consumer Satisfaction and Purchase Intention of Agri-food Contents (SNS 특성이 농식품 콘텐츠의 소비자만족과 구매의도에 미치는 영향)

  • Shin, Mi-Hae;Oh, Sang-Heon;Hwang, Dae-Yong;Seo, Su-Seok;Kim, Young-Chul
    • The Journal of the Korea Contents Association
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    • v.12 no.11
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    • pp.358-367
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    • 2012
  • Recently, The development of information and communication technologies is having a very strong effect on the agri-food industry. Especially, agri-food content utilizing social network services such as Facebook and Twitter led to direct communication with consumers stirred into a new distribution channel. The purpose of this paper is to provide way to successful utilization of agri-food contents and improvement of purchase intention. The results of analyzing the relation between the three characteristics of SNS-social presence, conversation and interaction frequency-, consumer satisfaction and purchase intention are summarized as follows. First, characteristics of SNS of social presence and conversation have a positive effect on consumer satisfaction. Second, the interaction frequency does not have positive effect on consumer satisfaction. Finally, the consumer satisfaction has a positive effect on purchase intention.

Identification of N,N',N"-triacetylfusarinine C as a key metabolite for root rot disease virulence in American ginseng

  • Walsh, Jacob P.;DesRochers, Natasha;Renaud, Justin B.;Seifert, Keith A.;Yeung, Ken K.C.;Sumarah, Mark W.
    • Journal of Ginseng Research
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    • v.45 no.1
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    • pp.156-162
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    • 2021
  • Background: It is estimated that 20-30% of ginseng crops in Canada are lost to root rot each harvest. This disease is commonly caused by fungal infection with Ilyonectria, previously known as Cylindrocarpon. Previous reports have linked the virulence of fungal disease to the production of siderophores, a class of small-molecule iron chelators. However, these siderophores have not been identified in Ilyonectria. Methods: High-resolution LC-MS/MS was used to screen Ilyonectria and Cylindrocarpon strain extracts for secondary metabolite production. These strains were also tested for their ability to cause root rot in American ginseng and categorized as virulent or avirulent. The differences in detected metabolites between the virulent and avirulent strains were compared with a focus on siderophores. Results: For the first time, a siderophore N,N',N"-triacetylfusarinine C (TAFC) has been identified in Ilyonectria, and it appears to be linked to disease virulence. Siderophore production was suppressed as the concentration of iron increased, which is in agreement with previous reports. Conclusion: The identification of the siderophore produced by Ilyonectria gives us further insight into the root rot disease that heavily affects ginseng crop yields. This research identifies a molecular pathway previously unknown for ginseng root rot and could lead to new disease treatment options.

In vitro ruminal fermentation of fenugreek (Trigonella foenum-graecum L.) produced less methane than that of alfalfa (Medicago sativa)

  • Niu, Huaxin;Xu, Zhongjun;Yang, Hee Eun;McAllister, Tim A;Acharya, Surya;Wang, Yuxi
    • Animal Bioscience
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    • v.34 no.4
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    • pp.584-593
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    • 2021
  • Objective: The objective of this study was to compare fenugreek (FG) with alfalfa (Alf) in ruminal fermentation and methane (CH4) production in vitro. Methods: Whole-plant FG harvested at 11- and 15-wk and Alf harvested at early and mid-bloom maturities, alone or as 50:50 mixture of FG and Alf at the respective maturity, were assessed in a series of 48-h in vitro batch culture incubations. Total fermentation gas and methane gas production, dry matter (DM) disappearance, volatile fatty acids, microbial protein and 16S RNA gene copy numbers of total bacteria and methanogens were determined. Results: Compared to early bloom Alf, FG harvested at 11-wk exhibited higher (p<0.05) in vitro DM and neutral detergent fibre disappearance, but this difference was not observed between the mid-bloom Alf and 15-wk FG. Regardless plant maturity, in vitro ruminal fermentation of FG produced less (p<0.001) CH4 either on DM incubated or on DM disappeared basis than that of Alf during 48-h incubation. In vitro ruminal fermentation of FG yielded similar amount of total volatile fatty acids with higher (p<0.05) propionate percentage as compared to fermentation of Alf irrespective of plant maturity. Microbial protein synthesis was greater (p<0.001) with 11-wk FG than early bloom Alf as substrate and 16S RNA gene copies of total bacteria was higher (p<0.01) with 15-wk FG than mid-bloom Alf as substrate. Compared to mid-bloom Alf, 15-wk FG had lower (p<0.05 to 0.001) amount of 16S RNA methanogen gene copies in the whole culture during 48-h incubation. Conclusion: In comparison to Alf, FG emerges as a high quality forage that can not only improve rumen fermentation in vitro, but can also remarkably mitigate CH4 emissions likely due to being rich in saponins.

The Effect of the Characteristics of Agri-Food Open Market on the Repurchase Intention: Focusing on the Moderating Effect of Innovation (농식품 오픈 마켓 특성이 재구매 의도에 미치는 영향: 혁신성의 조절효과를 중심으로)

  • Kim, Sangmi;Ha, Gyusu
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.16 no.4
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    • pp.153-165
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    • 2021
  • With the disappearance of boundaries between online and offline, the O2O(online to offline) platform service is rapidly growing. Unlike general products, freshness is an important decision-making factor for agri-food, and there are many limiting factors for growth as an open market among O2O platforms due to the characteristics of difficult refunds and exchanges compared to other items and new transaction methods. In order to overcome these obstacles, consumer innovation must be considered. The purpose of this study was to investigate the influence of O2O(online to offline) platform characteristics perception on agri-food repurchase intentions. And an empirical survey of the hypothesis is made that innovation will show a moderating effect between agri-food O2O platform characteristics and repurchase intention. And an empirical survey of the hypothesis is made that innovation will show a moderating effect between agri-food O2O platform characteristics and repurchase intention. For this purpose, Using a convenience sampling technique, an online survey was conducted through Google survey from April 1 to April 15, 2021. A total of final analysis data were collected from a total of 270 purchase experienced of agri-food O2O(online to offline) platform. The SPSS program was used for analysis, and multiple regression analysis was used for hypothesis verification. The results showed that Economic, Interaction, and Playfulness had a significant positive effect on agri-food repurchase intend. Also, Interactivity × innovation, playfulness × innovation were found to have a significant positive (+) effect on repurchase intention. The results of this study show that innovation reduces the burden on consumers for new systems and mobile transactions. The results of this study suggest that convenient interface design is important for activating O2O transactions of agri-food. In addition, education and support are needed to strengthen the IT competency of farmers. The results of this study will be able to contribute to the establishment of infrastructure for agri-food open market shopping malls. In future studies, the influence of the O2O platform type on the purchase intention should be studied continuously.

Investigation of Microbial Contamination in Liriope platyphylla at Post Harvest Environments (맥문동(Liriope platyphylla) 수확 후 처리 환경의 위생지표세균 및 병원성 미생물 오염도 조사)

  • Kim, Yeon Rok;Ha, Ji-Hyoung;Kim, Se-Ri;Park, Young Chun;Kim, Kyeong Cheol;Kim, Won-Il;Ryu, Song Hee;Kim, Hwang-Yong
    • Journal of Food Hygiene and Safety
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    • v.31 no.2
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    • pp.99-106
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    • 2016
  • This study was aimed to assess microbiological contamination level of Liriope platyphylla farms (A, B, and C) located in Cheongyang, Chungnam province. Specimens sampled from those farms and L. platyphylla tuberous roots were assessed for sanitary indication bacteria such as total aerobic bacteria, coliforms, and Escherichia coli and pathogenic bacteria such as Escherichia coli O157:H7, Listeria monocytogenes, Salmonella spp., Staphylococcus aureus and Bacillus cereus, quantitatively and qualitatively. As a result, those farms are not contaminated by E. coli O157:H7, L. monocytogenes, Salmonella spp., at all. And S. aureus was only found qualitatively from workers' gloves at a farm. As a whole, those farms (soil, harvest container, harvester, cleanser, washing water and tray) were maintained in a low level of microbiological contamination. However a cleanser was contaminated by coliforms ($4.35log\;CFU/100cm^2$), and it is required to improve farm hygiene. Microbiological contamination level of L. platyphylla tuberous root was decreased in the postharvest process including washing and drying.

Milk-clotting Enzyme from Mcroorganisms (Part XI) -Specificity Mucor-rennin (Crystalline Milk-clotting Enzyme of Mucor pusillus) on Synthetic Peptides- (미생물이 생산하는 응유효소 (제 11 보) -Mucor pusillus가 생산하는 결정응유효소, Mucor-rennin의 합성 Peptide에 대한 기질 특이성-)

  • Yu, Ju-Hyun;Osawa, Hisao;Tamura, Gakuzo;Hong, Yun-Myung;Arima, Kei
    • Korean Journal of Food Science and Technology
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    • v.2 no.2
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    • pp.43-48
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    • 1970
  • When of the synthetic peptides were subjected hydrolysis with Mucor-rennin which crystalline milk-clotting enzyme from Mucor pusillus, the peptides of Z-L-Glu-L- Phe-OH, Z-L-Phe-L-Tyr-OH, Z-L-Phe-L-Leu-OH, Z-L-Tyr-L-Leu and Z-L-Glu-L-Phe-OH, were found to be hydrolysis.

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