POR ASCOM UESB VCA (ascom@uesb.edu.br)
Você já ouviu falar em um fruto chamado mangostão? Originário do Sudeste da Ásia, o fruto típico de regiões tropicais é famoso, especialmente, pelo seu sabor e aroma. Mas agora uma nova faceta dele vem sendo pesquisada: o uso da sua casca na produção de corantes naturais para a indústria de alimentos, medicamentos e cosméticos.
O estudo vem sendo realizado no Laboratório de Tecnologia de Produtos de Origem Vegetal (LTPOV) da Uesb, campus de Itapetinga. O objetivo central é aproveitar os chamados pericarpos do mangostão, a casca de cor púrpura, para produção, formulação e aplicação do corante natural em alimentos e outros produtos.
Andréa Gomes, professora e pesquisadora que lidera a pesquisa, explica que essa cor presente na casca do mangostão é devido aos flavanoides antociânicos, um composto natural presente em frutos e flores, como uva, açaí, repolho roxo, jabuticaba, hibisco e tantos outros.
Além da cor, esse novo corante impacta na dieta de quem consome os alimentos. “Diferente dos corantes artificiais/sintéticos, os naturais são compostos bioativos, que além dos efeitos sobre a percepção das cores, apresentam atividade antioxidante, com alegações de funcionalidade como proteção às células contra danos causados pelos radicais livres, ação anti-inflamatória e antitumoral”, aponta Andréa.
Apesar dos corantes artificiais apresentarem mais estabilidade, poder tintorial e menor custo, problemas de alergias e outros malefícios à saúde humana vêm apontando uma cautela mundial quanto ao seu uso. “A tendência demonstrada pelo mercado em restringir o uso de corantes sintéticos em alimentos e as restrições impostas pela Organização Mundial de Saúde têm levado a indústria e os pesquisadores ao interesse por materiais naturais, em particular hortifrutícolas, folhas e flores, que são usados como corantes”, explica a pesquisadora.
No Brasil, o sul da Bahia e regiões do Pará, São Paulo e Espírito Santo são as maiores produtoras do mangostão. Apesar de cerca de 75% do peso do fruto ser da sua casca, o consumo dele está concentrado em sua polpa, o que gera um alto descarte. “O aproveitamento desses materiais apresentam várias vantagens econômicas e ambientais, como a utilização integral de matérias-primas biológicas, por exemplo”, acrescenta Andréa.
Da extração à aplicação – Até chegar ao corante e sua aplicação, os cientistas tiveram um longo caminho. O primeiro passo foi a obtenção da matéria-prima. Todas as cascas do mangostão utilizadas nessa pesquisa experimental vieram dos municípios de Una e Ipiaú, no sul da Bahia, direto para o Laboratório da Uesb.
Com os pericarpos em mãos, as etapas seguintes compreenderam a obtenção e a quantificação do extrato bruto, o estudo da estabilidade, a extração em maiores quantidades, a formulação do corante, a aplicação desse corante formulado e o tratamento estatístico dos dados.
“Os corantes concentrados foram testados em balas de gelatina e embalagens inteligentes (biofilmes) como indicadores colorimétricos de qualidade”, explica Andréa, que contou com a colaboração da professora Cristiane Patrícia de Oliveira, também da Uesb.
O trabalho ainda tem pesquisadores da Universidade Federal de Sergipe (UFS), da Universidade Federal de Viçosa (UFV) e Universidade Federal do Rio de Janeiro (UFRJ) como parceiros. Os resultados obtidos já foram publicados em eventos e revistas científicas.
Imagem: Ilustrativa
My brother suggested I might like this website He was totally right This post actually made my day You cannt imagine just how much time I had spent for this information Thanks
탑플레이어포커머니상
탑플레이어포커머니상
I just could not depart your web site prior to suggesting that I really loved the usual info an individual supply in your visitors Is gonna be back regularly to check up on new posts
What i dont understood is in reality how youre now not really a lot more smartlyfavored than you might be now Youre very intelligent You understand therefore significantly in terms of this topic produced me personally believe it from a lot of numerous angles Its like women and men are not interested except it is one thing to accomplish with Woman gaga Your own stuffs outstanding Always care for it up
Greetings from Florida! I’m bored to tears at work so I decided to browse your site on my iphone during lunch break. I love the knowledge you provide here and can’t wait to take a look when I get home. I’m shocked at how fast your blog loaded on my phone .. I’m not even using WIFI, just 3G .. Anyways, superb site!
It is best to participate in a contest for among the finest blogs on the web. I’ll suggest this web site!
2fxd6g
kdlkef
As I website owner I believe the content material here is very wonderful, regards for your efforts.
Hi, i think that i saw you visited my website thus i came to “return the favor”.I am trying to find things to enhance my site!I suppose its ok to use some of your ideas!!
This is a topic close to my heart cheers, where are your contact details though?
Hey there! Someone in my Myspace group shared this site with us so I came to give it a look. I’m definitely enjoying the information. I’m book-marking and will be tweeting this to my followers! Superb blog and superb design.
Hey there! I know this is kinda off topic but I was wondering which blog platform are you using for this website? I’m getting tired of WordPress because I’ve had problems with hackers and I’m looking at options for another platform. I would be fantastic if you could point me in the direction of a good platform.
I’m not sure the place you’re getting your information, however good topic. I needs to spend a while learning much more or figuring out more. Thanks for great info I was searching for this information for my mission.
I went over this website and I believe you have a lot of fantastic info , saved to my bookmarks (:.
Real nice design and style and excellent subject material, hardly anything else we want : D.
My partner and I stumbled over here from a different website and thought I may as well check things out. I like what I see so i am just following you. Look forward to finding out about your web page yet again.
Hi, i think that i saw you visited my site so i came to “return the favor”.I am trying to find things to improve my web site!I suppose its ok to use some of your ideas!!
Keep functioning ,fantastic job!
you are really a good webmaster. The web site loading speed is incredible. It seems that you’re doing any unique trick. In addition, The contents are masterpiece. you have done a magnificent job on this topic!
Hello there! This post couldn’t be written any better! Reading through this post reminds me of my good old room mate! He always kept talking about this. I will forward this article to him. Fairly certain he will have a good read. Many thanks for sharing!
What¦s Happening i am new to this, I stumbled upon this I’ve found It absolutely helpful and it has helped me out loads. I’m hoping to give a contribution & help other customers like its helped me. Good job.
Hi there, I found your site via Google while searching for a related topic, your site came up, it looks great. I’ve bookmarked it in my google bookmarks.
Someone essentially help to make seriously posts I would state. This is the very first time I frequented your website page and thus far? I surprised with the research you made to make this particular publish extraordinary. Wonderful job!
Together with every little thing that appears to be building within this specific subject matter, your viewpoints are actually somewhat exciting. Even so, I appologize, but I can not give credence to your whole suggestion, all be it exciting none the less. It looks to us that your commentary are generally not entirely justified and in actuality you are your self not even thoroughly confident of your point. In any event I did appreciate reading through it.
But wanna comment that you have a very decent internet site, I love the layout it actually stands out.
I’m now not sure the place you’re getting your information, but great topic. I must spend a while studying more or working out more. Thank you for magnificent information I was searching for this information for my mission.
hey there and thank you for your info – I’ve definitely picked up something new from right here. I did however expertise some technical issues using this web site, since I experienced to reload the site a lot of times previous to I could get it to load properly. I had been wondering if your hosting is OK? Not that I’m complaining, but sluggish loading instances times will very frequently affect your placement in google and could damage your high-quality score if advertising and marketing with Adwords. Anyway I am adding this RSS to my e-mail and could look out for much more of your respective interesting content. Ensure that you update this again very soon..