Bioactive compounds and acceptance of cookies made with Guava peel flour

The use of fruit industrial waste in the processing new foods represents an important new step for the food industry. This study aimed to develop cookie recipes using different amounts of guava peel flour (GPF) levels (30%, 50%, and 70%) to evaluate the proximate composition, and the phenolic compound, lycopene, and β-carotene levels in the cookies and flour and to evaluate the cookie sensory acceptance. The results demonstrated low moisture, lipid and carbohydrate contents in the flour and cookies. GPF was considered rich in fiber, ash, polyphenols, and β-carotene. The sensory analysis showed satisfactory acceptance of the cookies containing 30% GPF regarding the aroma, flavor, and texture attributes. The cookies containing 50% and 70% GPF received satisfactory acceptance regarding to aroma only. In conclusion, GPF can be used to partially replace wheat flour in the preparation of cookies to improve the nutritional quality without affecting the product sensory quality.

Stability of porridge pre-mixture made with Brazil nut flour and green banana flour with and without milk powder

The mixture of Brazil nut flour and green banana flour can improve the nutritional value of school meals, allowing for the use of regional ingredients derived from family agriculture. This study aimed to assess the stability of porridge pre-mixtures made with Brazil nut flour and green banana flour during six months of storage. Two types of pre-mixture were evaluated: with and without milk powder. These mixtures were packed in polyethylene/metallized polyester film, vacuum-sealed, and stored at room temperature. The products were evaluated for physicochemical composition, and every 30 days for moisture content, water activity, titratable acidity, pH, peroxide value and acidity of the lipid phase, total and thermotolerant coliforms, yeasts and molds, and sensory acceptance. There was no difference between the mixtures for the parameters evaluated. Moisture content, water activity, acidity of the lipid phase, and the yeast and mold count increased with storage time. The growth of yeasts and molds was more pronounced after 90 days of storage, when water activity reached the limit of 0.60. Although both products had good sensory acceptance throughout the period of study, it is recommended that the shelf life does not exceed 90 days.

Physicochemical and sensory characteristics of snack made with minced Nile tilapia

Nile tilapia is one of the major fish species cultivated worldwide and in Brazil. The tilapia fillet yield is between 30-35%, thus around 70% of waste is generated. A portion of this waste can be used to obtain minced fish, and the resulting product can be used as meat raw material to prepare fish snacks. The aim of this study was to produce fish snacks containing different inclusion levels (20, 30, and 40%) of minced fish obtained from Nile tilapia processing waste and evaluate their physicochemical characteristics and sensory acceptance. Protein content, ash, water activity, and hardness increased with increasing inclusion of minced fish. The scores obtained in the sensory evaluation were: flavor acceptance (from 7.2 to 5.7), texture (from 7.4 to 5.3), overall acceptance (from 7.1 to 5.9), and willingness to purchase (from 4.0 to 3.1). This study demonstrates that the inclusion of 20 to 40% of minced fish of Nile tilapia in snacks is well accepted and improves their nutritional value without affecting the physicochemical properties.

Optimization of image analysis techniques for quality assessment of whole-wheat breads made with fat replacer

The cellular structure of healthy food products, with added dietary fiber and low in calories, is an important factor that contributes to the assessment of quality, which can be quantified by image analysis of visual texture. This study seeks to compare image analysis techniques (binarization using Otsu’s method and the default ImageJ algorithm, a variation of the iterative intermeans method) for quantification of differences in the crumb structure of breads made with different percentages of whole-wheat flour and fat replacer, and discuss the behavior of the parameters number of cells, mean cell area, cell density, and circularity using response surface methodology. Comparative analysis of the results achieved with the Otsu and default ImageJ algorithms showed a significant difference between the studied parameters. The Otsu method demonstrated the crumb structure of the analyzed breads more reliably than the default ImageJ algorithm, and is thus the most suitable in terms of structural representation of the crumb texture.

Influence of the wheat flour extraction degree in the quality of bread made with high proportions of β-glucan

β-glucan is currently one of the most important bioactive substances. Hence, there is a growing interest in the production of various foods containing β-glucan. The study examines the influence of the degree of wheat flour extraction in the quality of breads with high β-glucan content. Rheological tests were conducted on dough. Volume, mass, color and texture of bread were measured after baking. We observed that increasing the degree of extraction caused an increase in the storage and loss modulus. All of the bread made from the different flours were smaller in volume after the addition of β-glucan, although the yield increased. The crumb color of β-glucan-added breads was darker than the control samples. Control samples were higher in textural parameters (firmness, gumminess and chewiness). β-glucan-added samples had decreased porosity. The results revealed that using very strong flour with a high protein content results in a high quality β-glucan bread with a higher nutritional value due to the high total dietary fiber and β-glucan content.

Sensory acceptability and fatty acid profile of fish crackers made from Carassius gibelio

Abstract In this study, our aim was to consider the production of fish crackers using Carassius gibelio and to investigate the fatty acid profile and sensory quality of the fish crackers. Fish cracker mixture with a ratio 3.5:1.5 (minced fish/wheat starch) was obtained. Based on the total minced fish and starch level, 1.75% salt, 0.25% black pepper, 2% sunflower oil, 1% baking powder and 10% cold water (4 °C) were added and stirred until a homogenous mixture was obtained. The mixture was compressed in an extractor and baked. The moisture content of minced fish (CMF), cracker dough (CD) and crackers (CCr) was 77.73 ± 0.14%, 63.10 ± 2.18% and 7.95 ± 0.67% respectively. The n6/n3 ratio of crackers was 2.61 ± 0.20, PUFA/SFA ratio 2.28 ± 0.06 and DHA/EPA ratio 1.81 ± 0.01. The overall acceptability score obtained by the sensory evaluation of panelists was very high (8.09 ± 0.25).

Optimization of the HS-SPME-GC/MS technique for determining volatile compounds in red wines made from Isabel grapes (Vitis labrusca)

Abstract Brazilian wine production is characterized by Vitis labrusca grape varieties, especially the economically important Isabel cultivar, with over 80% of its production destined for table wine production. The objective of this study was to optimize and validate the conditions for extracting volatile compounds from wine with the solid-phase microextraction technique, using the response surface method. Based on the response surface analysis, it can be concluded that the central point values maximize the process of extracting volatile compounds from wine, i.e., an equilibrium time of 15 minutes, an extraction time of 35 minutes, and an extraction temperature of 30 °C. Esters were the most numerous compounds found under these extraction conditions, indicating that wines made from Isabel cultivar grapes are characterized by compounds that confer a fruity aroma; this finding corroborates the scientific literature.

Quantification of Toxin Biosynthesis Genes In Cyanobacteria and Dinoflagellates - Genetic Factors as Predictors of Toxin Production in the Environment

Harmful algal blooms (HABs) are events caused by the massive proliferation of microscopic, often photosynthetic organisms that inhabit both fresh and marine waters. Although HABs are essentially a natural phenomenon, they now cause worldwide concern. Recent anthropogenic effects, such as climate change and eutrophication via nutrient runoff, can be seen in their increased prevalence and severity. Cyanobacteria and dinoflagellates are often the causative organisms of HABs. In addition to adverse effects caused by the sheer biomass, certain species produce highly potent toxic compounds: hepatotoxic microcystins are produced exclusively by cyanobacteria and neurotoxic saxitoxins, also known as paralytic shellfish toxins (PSTs), by both cyanobacteria and dinoflagellates. Specific biosynthetic genes in the cyanobacterial genomes direct the production of microcystin and paralytic shellfish toxins. Recently also the first paralytic shellfish toxin gene sequences from dinoflagellate genomes have been elucidated. The public health risks presented by HABs are evident, but the monitoring and prediction of toxic events is challenging. Characterization of the genetic background of toxin biosynthesis, including that of microcystins and paralytic shellfish toxins, has made it possible to develop highly sensitive molecular tools which have shown promise in the monitoring and study of potentially toxic microalgae. In this doctoral work, toxin-specific genes were targeted in the developed PCR and qPCR assays for the detection and quantification of potentially toxic cyanobacteria and dinoflagellates in the environment. The correlation between the copy numbers of the toxin biosynthesis genes and toxin production were investigated to assess whether the developed methods could be used to predict toxin concentrations. The nature of the correlation between gene copy numbers and amount of toxin produced varied depending on the targeted gene and the producing organism. The combined mcyB copy numbers of three potentially microcystin-producing cyanobacterial genera showed significant positive correlation to the observed total toxin production. However, the presence of PST-specific sxtA, sxtG, and sxtB genes of cyanobacterial origin was found to be a poor predictor of toxin production in the studied area. Conversely, the dinoflagellate sxtA4 was a good qualitative indicator of a neurotoxic bloom both in the laboratory and in the field, and population densities reflected well the observed toxin concentrations. In conclusion, although the specificity of each potential targeted toxin biosynthesis gene must be assessed individually during method development, the results obtained in this doctoral study support the use of quantitative PCR -based approaches in the monitoring of toxic cyanobacteria and dinoflagellates.

Nivel de infección fúngica natural en relación a la calidad de semillas de maní

En semillas de maní, la relación entre el nivel de infección fúngica natural y la calidad, no ha sido establecida claramente. El objetivo de este trabajo fue evaluar la relación entre el nivel de infección fúngica natural y la calidad de semillas de maní, en términos de viabilidad y vigor. Los ensayos se realizaron con 10 lotes de semillas de maní cv Florman seleccionados por su nivel de calidad sanitaria, provenientes del área núcleo manisera argentina. Entre los ensayos realizados, aquellos que se identificaron como sensibles y que permiten establecer los diferentes niveles de calidad fueron germinación, vigor por tetrazolio y conductividad. El porcentaje de aceite sólo detectó variaciones en los lotes de alto nivel de infección y no hubo modificaciones en la relación oleico/linoleico en ninguno de los casos. De los resultados obtenidos se concluye que los niveles de calidad de los lotes evaluados, están estrechamente correlacionados con la calidad fisiosanitaria.

Man and the Milieu: Ecocritical analysis of Ernest Hemingway’s “Big Two-Hearted River” and “Indian Camp

Pro Gradu -tutkielmassani tarkastelen Ernest Hemingwayn alun perin vuonna 1925 julkaistuja kahta novellia ”Big Two-Hearted River” ja ”Indian Camp”. Molemmat teokset kuuluvat Nick Adams -tarinoihin, jotka ovat kokoelma novelleja, joissa Hemingway kuvaa Nick Adamsin elämää pojasta mieheksi. Nick Adams on usein tulkittu Hemingwayn alter egoksi ja monet tapahtumat ovatkin suoraa heijastusta Hemingwayn elämästä. Päähenkilön lisäksi monia Nick Adams -tarinoita yhdistää luonnon vahva läsnäolo ja Hemingwayn kuuluisan maalauksellinen miljöön deskriptiivisyys. Käyttämäni ekokriittisen teorian avulla pyrin osoittamaan tutkielmassani, että Nick Adamsin hahmo peilautuu miljöökuvauksessa syventyen dynaamiseksi hahmoksi ja että Hemingwayn luonto- ja ympäristökuvaus peilaa hahmon sisäistä maailmaa hyvinkin läheisesti. Tutkimukseni teoreettinen viitekehys, ekokritiikki, on kirjallisuudentutkimuksen suuntaus, joka tutkii ihmisen ja fyysisen ympäristön suhdetta toisiinsa. Lisäksi hyödynnän tutkielmassani dikotomioita, joiden avulla tarkastelen ja analysoin novelleista nousevia aiheita. Esimerkiksi seuraavat dikotomiat ovat keskeisiä molemmissa novelleissa: kulttuuri vs. luonto, pastoraali vs. erämaa, matka vs. oleskelu, keho vs. mieli, vesi vs. maa, tuli tai valo vs. vesi ja elämä vs. kuolema.

Den Äldsta – livet är ett tillägnande : en vårdvetenskaplig explorativ studie av ett meningsbärande budskap och en innerlig visdom

In the background of the thematic The Eldest – life is acquiring one finds both previews and myths. Wisdom belongs to these myths. The hermeneutical philosophy refers to thinking as o movement from myth to logos in a dialogical oneness. The research uncovers dimensions in the element wisdom as empowered. The experiences of older are saved for further learning and transformation to younger with reference to vulnerable situations where common regulations are no more usefull. The interest goes to an Eldest. The Eldest in the study is pictorial in accordance to the main literature in the study.The Eldest is etymological, fictive and symbolic: – a man who understands higher matters of life, even Gods holy matters. She will set the fulfillment of others as the highest endowment out of an innermost ethos and an innermost wisdom. The innermost is wisdom. The aim is to discover a meaningful message in life is acquiring. In order to see and to learn from the experiences the study aim to uncover the innermost, an innermost wisdom out of a caritative approach. This innermost is anticipated as a longing for unity and health in dayly matters and in a caring ability for the other. The main overstatement is: What will this most meaningfull and innermost by the Eldest out of a living in factual life mirrored in a caring perspective be? Two questions expired; what will the meaningful message in the acquiring be? What will the innermost wisdom in serving the good be? This message and its innermost wisdom will get an expanded meaning out of a caring sentence: Man who dare – seeing back with gratitude, seeing forward in confidence, seeing aside with love and upward in fate wear that dignity, that holiness and that mercy and empathy which belong to life in its basics. The persons attending the research are situated in two contexts. One group has roots in the Lutheran church and the other in a caring profession. The datamaterial is formed out of the usages from these persons, from the spoken (conversation) and the written word (a guestbook). The usages as particular and common are continually integrated in the leading caring sentence from the beginning of the study to the end. The usages stand by the methodological for the final message and wisdom and at the same they form the operative dimension in the study, the evident and the validity. The overarching methodological approach is in the hermeneutic philosophy in accordance with the abductive logic. The usages out of two research groups are most significant in this deductive, inductive and abductive strategy. The usages from the research groups are confronted with the caring sentence in dialogical spaces, halts. The meaning and the innermost searched for will be pictured through the abductive and hermeneutic interpretation and will stand for an articulation of and a successively expansion of meaning. A twine of horizons out of the entire dissemination, the deductive and the inductive, creates the result, as the final message as the ground for an understanding of an even more embracing meaning in an innermost wisdom. The identified bearing movement in the groups in accordance with the caring sentence goes for something higher, something higher than me, to the wellbeing of the other. A conclusion is made and a thesis is identified. This thesis is out from the usages: What can I do in a creating of this caritative? An antithesis is also identified, is a man able to look outside one own and go to something higher, something greater? The synthesis is articulated as a dialogical movement from something … to something higher. The bridge could be maturation, transcendence, the divine or wisdom. The statement finds its root in the attending groups but a difference is also identified. This higher matter is different. The contexts and their meaningfulness decide. A final statement is: learn to see man and her matters hold in life.

Effect of loading type on the fatigue strength of symmetric and asymmetric welded joints made of ultra high strength steel

In this study, finite element analyses and experimental tests are carried out in order to investigate the effect of loading type and symmetry on the fatigue strength of three different non-load carrying welded joints. The current codes and recommendations do not give explicit instructions how to consider degree of bending in loading and the effect of symmetry in the fatigue assessment of welded joints. The fatigue assessment is done by using effective notch stress method and linear elastic fracture mechanics. Transverse attachment and cover plate joints are analyzed by using 2D plane strain element models in FEMAP/NxNastran and Franc2D software and longitudinal gusset case is analyzed by using solid element models in Abaqus and Abaqus/XFEM software. By means of the evaluated effective notch stress range and stress intensity factor range, the nominal fatigue strength is assessed. Experimental tests consist of the fatigue tests of transverse attachment joints with total amount of 12 specimens. In the tests, the effect of both loading type and symmetry on the fatigue strength is studied. Finite element analyses showed that the fatigue strength of asymmetric joint is higher in tensile loading and the fatigue strength of symmetric joint is higher in bending loading in terms of nominal and hot spot stress methods. Linear elastic fracture mechanics indicated that bending reduces stress intensity factors when the crack size is relatively large since the normal stress decreases at the crack tip due to the stress gradient. Under tensile loading, experimental tests corresponded with finite element analyzes. Still, the fatigue tested joints subjected to bending showed the bending increased the fatigue strength of non-load carrying welded joints and the fatigue test results did not fully agree with the fatigue assessment. According to the results, it can be concluded that in tensile loading, the symmetry of joint distinctly affects on the fatigue strength. The fatigue life assessment of bending loaded joints is challenging since it depends on whether the crack initiation or propagation is predominant.

Leveiden keskimerkintöjen liikenneturvallisuusvaikutusten arviointi

Tämän raportin tavoitteena oli käsitellä leveiden keskimerkintöjen liikenneturvallisuusvaikutuksia, toteuttaa mielipidekysely kantatie 54 kokeiluosuuden vaikutusalueella sekä esitellä aiemmin tehdyt tutkimukset ja leveiden keskimerkintöjen taustaa. Raportin on laatinut Eino Lahtinen Hämeen ammattikorkeakoulusta opinnäytetyönään. Työn taustateoriaksi syvennyttiin leveiden keskimerkintöjen historiaan Suomessa ja ulkomailla sekä Suomessa tehtyihin tutkimuksiin aiheesta. Suomessa ja ulkomailla on havaittu jo vuosikymmenten ajan korkealuokkaisten teiden liikenneturvallisuuden heikentyneen liikenteen lisääntyessä. Kohtaamis- ja ohitusonnettomuuksien jäljet ovat usein raakaa katseltavaa ja luettavaa. Huoli kohtaamis- ja ohitusonnettomuuksien määristä ja niiden vakavuuksista painostaa etsimään ratkaisuja tämän kaltaisten onnettomuuksien vähentämiseksi. Tästä syystä on 1980-luvulta lähtien aktiivisesti etsitty liikenneturvallisuutta parantavia kustannustehokkaita ratkaisuja. Visuaalisia vaikutuksia arvioidessa havaittiin jo varhain kaistan leveyden visuaalisen kaventamisen johtavan ajonopeuksien laskuun, joka vähentää onnettomuuksia ja niiden vakavuuksia. Yhdeksi ratkaisuksi esitettiin leveää keskimerkintää, josta on ollut erilaisia kokeiluja ulkomailla 1996 ja Suomessa 2009 lähtien. Työn tuloksena voidaan esittää, että leveiden keskimerkintöjen vaikutukset ajokäyttäytymiseen ovat melko vähäiset, sillä lähes puolet kyselyyn vastanneista ei havainnut muutosta omassa tai muiden ajokäyttäytymisessä. Työn perusteella arvioidaan, että leveät keskimerkinnät vähensivät henkilövahinkoon johtaneita ohitus-, kohtaamis- ja vasemmalle suistumisonnettomuuksia 17 – 21 %. Tutkimuksen perusteella voidaan todeta, että leveitä keskimerkintöjä käytettäessä on varmistuttava riittävästä piennarleveydestä (vähintään 1 m). Leveää keskimerkintää voidaan käyttää alueilla, jossa tien päällysteen leveys on vähintään 10 m, KVL vähintään 1500 ajon/vrk ja tiejakson pituus vähintään 10 km. Leveän keskialueen tulisi olla metrin levyinen.

Home Made Cars: An insight on Consumer Ethnocentrism – Case Saab

Saab outstands in the history of the Finnish car manufacturing. This is not only due to that these cars have been manufactured in Finland more than other passenger vehicles altogether. Finns also have a special emotional attachment to the “Finnish Saabs”. Findings from previous studies show that consumers connect cars well to the origin of the brand (COB). They are however rarely aware of the Country of Manufacturing (COM). Domestic brands are often popular in the COB, but research from situations in which the domestic origin is limited to the COM is rare. The case of this study is a phenomenon, in which the products origin is two dimensional and divided into domestic COM and foreign COB. The aim is to understand the phenomenon’s effect on consumer behavior. The research problem is approached with two sub questions: • Which country do consumers perceive as the origin country of the car? • What is the role of this origin in the consumers’ product perception and purchasing decision of the car? The theoretical framework of this study applies previous findings of two areas of interest: Country of Origin effect and Consumer Ethnocentrism. This is followed by feasibility studies that present and discuss the history and current state of Finnish car manufacturing. Based on the findings of earlier stages of the study, the role of the domestic COM on consumer behavior is presumed high. This expectation is confirmed by the experts and also by the first consumer respondent, who states domestic origin having been the main motivation to his car choice. All further consumer respondents do however not connect Saab to the home country, but discuss it as a Nordic car. This unexpected finding means that they do not perceive the origin to be neither the COM nor COB, but a geographical area that includes both countries. In other words, consumers have widened their in-group in a way that is in this thesis explained with reference group theory. The consumers’ perceived origin of the car is in this research found to be an important factor to the consumers’ product perception and purchasing decision. Being fit for the yields of the local environment is discovered to have been the most important factor to Finnish consumers purchasing choice of a Saab and the Nordic origin has been an indicator of this fit to them.

Man O'War, le cheval qui a battu les records du monde : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 59717