DOST, tinitingnan ang potensyal ng forest-based products vs dengue

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Transcript

00:00Kaka-RSP, dengue is one of the diseases that continues to affect our countrymen, especially during the rainy season.

00:08But the Department of Science and Technology, or DOST, has good news.

00:14They are looking for innovative solutions for dengue from our own nature.

00:20Recently, they published a research on the use of forest-based solutions as insect repellents.

00:33To better understand the details and implications of their research,

00:38we will be joined by Forrester Florena Samiano, a senior science research specialist from DOST FPRDI.

00:52Good morning to you, ma'am.

00:54Good morning!

00:56Good morning, Ma'am Leslie and Sir Noel, and to all of your followers on Rise and Shine Philippines.

01:04Ma'am, what was the inspiration behind DOST FPRDI's discovery of forest-based products

01:11such as cinnamon bark and resin as insect repellents?

01:15And how did it fit with your research?

01:20Yes, ma'am.

01:21Our office is located inside Mt. Makiling Forest Reserve, inside the UP Los Baños Forestry Campus.

01:31So, from 5 p.m. onwards, when it starts to get dark, there are already a lot of mosquitoes.

01:41So, when we thought of this, Laguna is also one of the highest dengue cases.

01:50And in our research, we research different aromatic plants and trees,

01:59like cinnamon, almasiga, and pili, and other aromatic plants for essential oils

02:07and their application for possible flavors and fragrances

02:12because we have the flavors and fragrances from the Forest Technology Program.

02:19So, we learned that these essential oils primarily come from the secondary metabolites

02:29that these aromatic plants and trees have

02:32because they use this protection against other deteriorating organisms.

02:38So, naturally, there are inherent repelling properties

02:42from the resins, oils, and extracts from these aromatic plants.

02:49At first, we put the oils in diffusers for repelling and disinfecting,

02:59but we realized that the essential oils are too expensive.

03:05And we observed that there are a lot of processed waste residues after oil extraction.

03:11In our lab, after we extract it, there are solid and liquid residues

03:18like spent leaves, spent barks, spent resins, and even hydrosol

03:23that are still aromatic, you can still smell the aroma.

03:28So, for us, that's where it started.

03:31In the lab scale, we can see that there are a lot of waste residues.

03:36What's more, in the industry, they produce tons of essential oils

03:42and it's a waste if we just throw it away.

03:46It will also contribute to our environment.

03:51So, we converted it into incense

03:54and we tested its repellency against mosquitoes and houseflies.

04:04Ma'am Florina, it seems like you used a lot of ingredients.

04:09So, walk us through the process.

04:12How did you make the cone and stick essence from your research?

04:21Yes.

04:22Generally, when we make incense,

04:25we need a combustible base,

04:29an aromatic substance,

04:32a liquid substance,

04:34and a binding agent.

04:36And for the incense stick,

04:38of course, it's the stick that holds the incense.

04:43These are the ones I mentioned earlier,

04:46the cinnamon sticks.

04:49These are the cinnamon spent barks and leaves,

04:52the spent resins from Almasiga and Pili Resin,

04:57and the hydrosol that is supposed to be thrown away.

05:03That's what we used.

05:05For the stick, we used bamboo

05:09because we also have research on bamboo.

05:12We do R&D on bamboo, on FPRDI.

05:16We studied the right proportion of these materials

05:21because molding incense is critical.

05:25It should not be crushed after molding

05:30because when you market it,

05:35your product should not be crushed.

05:37How will you burn it?

05:39So, we developed several formulations

05:42of incense cones and incense sticks

05:45using these materials.

05:48We observed the burning time,

05:51burning quality, and even the fragrance,

05:54as well as the repellency property

05:57of dengue mosquitoes and house flies.

06:01Aside from the insect repellency testing,

06:07we also used solid-phase micro-extractions

06:17and gas chromatography mass spectrometry

06:22to identify volatile compounds and aroma profiles

06:27that are responsible for aroma, fragrance,

06:31and insect repellency

06:35using this incense.

06:37Based on your scientific tests,

06:40how effective are forest-based solutions

06:44and are forest-based products safe

06:47for children and adults?

06:51Yes.

06:53We tried using the test-cage method.

06:58We took out mosquitoes from the test-cage

07:06and observed them.

07:09Mosquitoes and house flies repelled them.

07:18In terms of compounds detected,

07:23they are responsible for fragrance.

07:29One of them is creosol,

07:32which has anti-sepsis and deoxidization properties.

07:37It is also responsible for its spicy vanilla note

07:41that we can smell.

07:43It also has strong germicide properties

07:47and is limited in low concentration.

07:50Creosol is also used as an effective disinfectant

07:54and anti-septic.

07:56Furfural is also used

07:58as a caramel aroma.

08:05It is also used as a fumigant.

08:09With resins,

08:14there are traces of naphthalene

08:18for insecticide.

08:21Elemi is also responsible for fragrance

08:26that is citrusy, woody, and has a comfort odor.

08:32It is safe

08:34because of testimonials.

08:36For example,

08:38we had a visitor

08:43who was asthmatic.

08:47According to her,

08:49she was only exposed to a little bit of smoke

08:51and she was already asthmatic.

08:53But when she smelled the smoke,

08:55she was surprised

08:57because she wasn't asthmatic or being attacked.

08:59She was able to recover.

09:01So,

09:03our incense is safe

09:09when inhaled.

09:11It is also not irritable to the nose

09:13or the eyes.

09:15Those are the basic things

09:17that we look for

09:19so that it is safe to use.

09:21Yes.

09:23We still have a lot of questions

09:25but our time is limited.

09:27Thank you so much,

09:29Forrester Florena Samiano.

09:31Hopefully, this will help

09:33to control and reduce

09:35dengue cases in the country.

09:37Thank you very much.

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