Rabu, 27 Maret 2019



Based on the fact that occurred in processing industry food and fruits, then it should be found a proper way in order for the processing of food and fruits can produce a quality product with high nutritional value and quality have a save the old one without the use of formalin or preservatives with chemicals that are not dangerous, one of them namely chitosan from snail Achatina fulica. Chitosan from snail Achatina fulica is a product derived from the chitin polymer that is a by product or waste from the processing of the fishing industry, potentially very chitosan from snail Achatina fulica to serve as the ingredient antimicrobial and as a preservative in food and fruit, because it contains the enzyme lysozim and aminopolysacharida cluster (-NH3) which is able to inhibit the growth of microbes. Ability to suppress the growth of bacteria due to the chitosan has polikation. Positively charged polikation that is able to inhibition the growth of bacteria, in addition chitosan also acts as a natural preservative that can overlay (edible coating) made of various materials including polysaccharides, proteins and lipids that can improve the quality and extend the save, so it slows down oxidation and keeping the humidity that scientifically proven snail shell Chitosan can be solve the problem to serve as natural preservatives of fruit and food.

Kamis, 24 November 2016

Evaluasi MAPI Kelas XII

Khusus Kelas 12 IPA 6

Kerjakan dengan benar

1. Diberikan kubus ABCD.EFGH dengan AB = 4 cm. Hitung :
    a. cosinus sudut antara ACF dan ACH
    b. sinus sudut antara ACF dan EFGH
    c. tangen sudut antara bidang BDG dan bidang BDE

2. Diberikan limas segi-4 beraturan T.ABCD dengan AB = 8 cm dan TA = 5cm. Tentukan :
    a. cosinus sudut antara TAB dan TCD
    b. tangen sudut antara TAD dan ABCD
    c. sinus sudut antara TA dan TC

Kumpulkan hari Senin, tanggal 28 November 2016 jam 07.00

Senin, 21 November 2016

Evaluasi Matematika Wajib Kelas XII

Materi : Dimensi 3
Kelas : 12 IPA 1 dan 12 IPA 10

Kerjakan dengan baik dan benar

1. Sebuah balok mempunyai sisi yang luasnya 60 cm2, 72 cm2, dan 30 cm2.volume balok itu adalah. . .
2. Perbandingan rusuk sebuah balok adalah 3 : 4 : 5. Jika panjang diagonal ruang 20V2 cm, rusuk terpanjangnya adalah. . .

3. Diketahui kubus ABCD.EFGH titik P pada pertengahan AE dan Q pada pertengahan CG. Bidang yang melalui titik H, P, dan Q  membagi kubus menjadi dua bagian dengan perbandingan volumenya. . . 

4. Diketahui kubus ABCD.EFGH dengan panjang rusuk 2a. Jika P titik tengah BF dan Q titik tengah EH, panjang PQ sama dengan. . . 

Kumpulkan hari Jumat jam 07.00