본 연구에서는 가교제인 붕산과 아크릴 수지 바인더에 삼인산(3 인산), 피트산(6 인산) 또는 폴 리인산암모늄(10 인산)을 혼합하여 인계 난연 코팅액을 제조하였다. 제조된 인계 난연 코팅액을 부직포에 각각 코팅하여 높은 난연 효과를 얻었다. 이렇게 제조된 난연성 부직포를 연기밀도기준시험(ASTM E662), 산소한계지수기준시험(ISO E622), 수직연소기준시험(UL 94)을 이용하여 평가하였다. 그들의 난연 효과는 phosphate 그룹의 수에 의해 영향을 받았으며, 천연 또는 합성 바인더 수지에 관계없이 그 효과는 ammonium polyphosphate > phytic acid > triphosphate의 순서로 나타났다. 천연 탄화수소 화합물도 바인더 수지의 난연성을 결정하기 위해 조사되었다. 그 결과 천연 탄화수소 바인 더 수지가 난연성 부직포 제조에 사용될 수 있음을 보여주었다.

Edible insects have gained recognition worldwide as complementary protein sources. Recently, four edible insects were newly allowed to be used as food materials in Korea: the mealworm (Tenebrio molitor), the cricket (Velarifictorus asperses), the white-spotted flower chaffer beetle larva (Protaetia brevitarsis seulensis), and the rhinoceros beetle larva (Allomyrina dichotoma). In this study, we evaluated the oxidative stabilities of these four edible insects during cold storage. The insects were sacrificed by blanching for 3 minutes in boiling water. The blanched insects were then stored at 4℃ in an incubator for 42 days. The color values, titratable acidity, peroxide values, acid values, TBARS, contents of VBN, and total plate counts of the insects were measured at days 0, 2, 4, 7, 10, 14, 21, 28, 35, and 42, respectively. Blanching decreases oxidative stresses during storage. At day 0, the white-spotted flower chaffer beetle larva showed the highest values for acid value, TBARS, VBN, and microbial counts. Most of the oxidative indicators were significantly changed at day 14 in all four insects, possibly related with the growth on all microbial plates. Based on microbial safety and the oxidative stabilities of lipids and proteins, optimal storage conditions for the cricket, the white-spotted flower chaffer beetle larva, and the rhinoceros beetle larva were 10~14 days at 4℃. Likewise, the mealworm showed rapid oxidation after day 14, but poor qualities were not observed until day 28.